Products

DESCRIPTION

• Overview
• Product Description
• Product Parameters
• Packaging & Shipping
• Certifications
• PRODUCT APPLICATION
• Company Profile
• Our Advantages
• FAQ

Overview

Basic Info.

Model NO.	304/304L 316/316L
Grade	300 Series
Certification	ISO, ISO9001
Shape	Round
Technique	Cold Rolled
Surface Treatment	AP/BA/Polishing/Sand Blasting/Shot Blasting
Material	304L 316L Stainless Steel
Outer Diameter	1/8inch-24inch
Wall Thickness	Sch10s~Sch160
Length	Random Length or Fixed length
Test	Hydraulic Test /Eddy Current Test/Ultrasonic Test
Delivery Time	Stock 7 Days; MTO 30 Days
Trade Terms	EXW, FOB, CFR, CIF etc.
Markings	SS SMLS ASTM A312 TP316L 2" SCH40S 6MTR HEAT NO:
Transport Package	Packed in Bundles or Plywooden Box
Specification	6~630mm
Trademark	GH-STEEL
Origin	China
HS Code	7304419000
Production Capacity	2000 Tons Per Month

Product Description

ASTM A312 TP 316 / 316L Stainless Steel Pipes and Tubes is the low carbon version of 316 stainless. With the addition of molybdenum, the steel is popular for use in severe corrosion environments due to the materials immunity from boundary carbide precipitation (sensitisation).

The material is widely used in heavy gauge welded components and weld annealing is only required where the material is for use in high stress environments. 316L has an extensive variety of uses especially in marine applications due to the materials high corrosion resistance.

Chemical Composition & Mechanical Performance for stainless steel seamless tubes pipes

ANSI/ASME B36.10M B36.19M Dimension Coparison Table for Stainless Steel Tubes Pipes Tube Sizes for Heat Exchanger & Condensers& Boilier Standard Tolerance for Seamless Stainless Steel Tubes Pipes A269 A213 A312 A789 GOST9941-2022 EN10216-5 Standard Tolerance for Stainless Steel Seamless Tube Pipe

1. All of our stainless steel seamless pipe & tubes are packaged as per international standard to prevent any possible damage or loss. By default, we will use thick woven plastic bag to bundle the finished pipes together in batches.
2. For some special pipes & tubes that are vulnerable to dirt, scratches, stress or rough handling, we will suggest wooden case for protection. Kindly note, wooden case can incur extra cost, not only its own cost, but also the increased freight cost, which is especially true for air transportation.
3. For enhanced customer experience, we also provide dedicated package as per your special requirements.

1.Q: Do you provide customized product services?
A: Of course, we can design and produce the products you need based on your specifications and drawings. For example: special dimensions, special controls, OEM, etc.

2.Q: Are you a manufacturer or trader?
A: We are manufacturers. We have our own factory to produce and process various kinds of stainless steel /nickel alloy pipes.

3.Q: Can we get the some samples?Is there a charge?
A: Yes, we will provide you with the samples you want. The samples are free of charge, but the customer may have to pay the freight.

4.Q: Can we visit your factory?
A: Of course, we welcome you to visit our factory on-site or visit our production line through online videos to learn more about our strength and quality. Once we have your schedule, we will arrange a professional sales team to follow up with you.

5.Q: How do you ensure the quality of the product?
A: All products must undergo three inspections throughout the entire manufacturing process, including production, cutting, and packaging. The factory inspection report is provided with the goods. If necessary, third-party inspections such as SGS can be accepted.

6.Q: What is your delivery time?
A: Different products and procurement quantities have different delivery times. The product will be delivered as soon as possible on the basis of quality assurance. Usually, if the goods are in stock, it takes 3-10 days. Alternatively, if the goods are out of stock, it will take 25 to 45 days.

7.Q: Can you arrange shipment?
A: Of course, we have freight forwarders who have been cooperating for many years. We are VIP and can provide you with the most favorable prices and professional services.

8.Q: What if I don't have import experience?
A: We have rich export experience. As long as you have an import license, please leave the rest to us! We will help you choose the most suitable transportation service to safely and accurately deliver the product to the place where it is needed.

Product Description Product Parameters

Product Name	Stainless Steel Seamless Pipes /Tubes
	ASTM A312 304L 316L 6mtr Seamless Stainless Steel Pipes Grey White Surface Annealed Pickled
	бесшовная труба из нержавеющей стали
	Tubos de Aço Inoxidável sem Costura
	Pipa Stainless Steel Seamless
Company Inform	1.Name:WENZHOU GUOHAO STEEL., LTD
	2.Type: Manufacturer
Material	Austenitic:TP304,TP304L,TP304H,TP309S,TP310,TP310S,TP310H,TP316L,TP316Ti,TP317L,TP321,TP321H,TP347H,904L,254SMO,253MA
	GOST Grade: 08х18н10т,12х18н10т(AISI 321),10х17н13м2т(AISI 316Ti),20х23н18(AISI 310S),06хн28мдт(AISI 904L),08х18н10(AISI304)
	Duplex Stainless:UNS S31803,UNS S2205,UNS S32750,UNS S32760
	Nickel Alloy: Incoloy: 800,800H,800HT,825,926,20,28,201,200 Inconel :718,600,601,625 Hastelloy: C-22,C-276,B-2,B-3 High Temperature Alloy:GH3030,GH3039,Cr20Ni80 Monel400,K-500
Sources of raw materials	TSINGHSAN,BAOSTEEL,YONGXING etc
Standard	ASTM A312,ASTM A213,ASTM A269,ASTM A511,ASTM A789,ASTM A790
	ASTM B161 B163 B165 B167 B407 B423 B444 B622 B677 B729 B983
	EN 10216-5,DIN 17456
	GB/T 14976,GB13296,GB/T 21833,GB/T 15011,GB/T 15062
	GOST 9940,GOST 9941
Specification	D(Outer Diameter)	6mm-630mm
		1/8inch-24inch
	T(Wall Thickness)	0.89mm-80mm
		SCH5,SCH10S,SCH20,SCH40S,SCH 80S,SCH160,SCHXXS
		10 BWG, 12 BWG, 14 BWG , 16 BWG, 18 BWG, 20 BWG
		10 SWG, 12 SWG, 14 SWG , 16 SWG, 18 SWG, 20 SWG
	L(Length)	Random length 5~7m
		Fixed length 6m /6.096m /6.1m/12m
		As customer's actual request
Surface	Annealing&Pickling;Polishing;Bright Annealing;Sand Blasting;Shot Blasting / Shot Peening
Pipe End	Plain End (PE);Bevelled End (BE);Threaded End (TE)
Markings	GH-STEEL SML ASTM A312 TP316L 60.3x2.77x6000 MM HEAT NO.:***********
	Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer's private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.
Hydraulic Test or Nondestructive Test	Each pipe shall be subjected to the Nondestructive Test or the hydraulic test
Value Added Services	Customize Length Cutting;Bending;Polishing (180#,240#,320#,400#,600#);Shot Blasting / Shot Peening;Laser Drilling;Degreasing;Print Colour Code
Delivery Time	For ready stock :7 days after receiving the deposit ;For MTO: 30 days after receiving the deposit
Trade Terms	EXW,FOB,FCA, CFR, CIF etc.
Loading Port	Ningbo/Wenzhou/Shanghai
Remittance method	TT/LC/CASH/DP
Referenced Documents	ASTM Referenced Standards A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels A370 Test Methods and Definitions for Mechanical Testing of Steel Products A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys A999/A999M Specification for General Requirements for Alloy and Stainless-Steel Pipes A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless-Steel Tubes E112 Test Methods for Determining Average Grain Size E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

Chemical Composition (%)												Mechanical Performance
Grade	C	Mn	P	S	Si	Cr	Ni	Mo	N	Ti	Others	Tensile strength Mpa(min)	Yield strength Mpa(min)	Elongation. (%) em 2" (min)	Hardness HRB(max)
(AISI)	(max)	(max)	(max)	(max)	(max)	(min)	(min)	(min)	(min)	(min)
						(max)	(max)	(max)	(max)	(max)
304	0,080	2,0	0,045	0,030	1,00	18,0	8,0	-	-	-	-	515	205	35	90
						20,0	11,0
304L	0,035	2,00	0,045	0,030	1,00	18,0	8,0	-	-	-	-	485	170	35	90
						20,0	13,0
304H	0,040	2,00	0,045	0,030	1,00	18,0	8,0	-	-	-	-	515	205	35	90
	0,100					20,0	11,0
309S	0,080	2,00	0,045	0,030	1,00	22,0	12,0	0,75	-	-	-	515	205	35	90
						24,0	15,0
310	0,150	2,00	0,045	0,030	1,00	24,0	19,0	-	-	-	-	515	205	35	90
						26,0	22,0
310S	0,080	2,00	0,045	0,030	1,00	24,0	19,0	0,75	-	-	-	515	205	35	90
						26,0	22,0
310H	0,040	2,00	0,045	0,030	1,00	24,0	19,0	-	-	-		515	205	35	90
	0,100					26,0	22,0
314	0,200	2,00	0,045	0,015	1,50	24,0	19,0	-	0,11	-	-	515	205	35	90
					2,50	26,0	22,0
316	0,080	2,00	0,045	0,030	1,00	16,0	11,0	2,0	-	-	-	515	205	35	90
						18,0	14,0	3,0
316H	0,040	2,00	0,045	0,030	1,00	16,0	11,0	2,0	-	-	-	515	205	35	90
	0,100					18,0	14,0	3,0
316L	0,035	2,00	0,045	0,030	1,00	16,0	10,0	2,0	-	-	-	485	170	35	90
						18,0	14,0	3,0
316Ti	0,080	2,00	0,045	0,030	0,75	16,0	10,0	2,0	0,10	5x(C+N)	-	515	205	35	90
						18,0	14,0	3,0		0,70
317L	0,035	2,00	0,045	0,030	1,00	18,0	11,0	3,0	-	-	-	515	205	35	90
						20,0	15,0	4,0
321	0,080	2,00	0,045	0,030	1,00	17,0	9,0	-	0,10	5x(C+N)	-	515	205	35	90
						19,0	12,0			0,70
321H	0,040	2,00	0,045	0,030	1,00	17,0	9,0	-	0,10	4x(C+N)	-	515	205	30	90
	0,100					19,0	12,0			0,70
347	0,080	2,00	0,045	0,030	1,00	17,0	9,0	-	-	-	Nb: 10xC-1,0	515	205	35	90
						19,0	13,0
347H	0,040	2,00	0,045	0,030	1,00	17,0	9,0	-	-	-	Nb: 8xC-1,0	515	205	35	90
	0,100					19,0	13,0
254SMO S31254	0,020	1,00	0,030	0,030	0,08	19,5	17,50	6,0	0,18	-	Cu: 0,5-1,0	675 (T≤5mm)	315 (T≤5mm)	35	90
						20,5	18,50	6,5	0,25			655 (T>5mm)	310 (T>5mm)
253MA S30815	0,05	0,80	0,040	0,030	1,40	20,0	10,0	-	0,14	-	Ce: 0,03-0,08	600	310	40	95
	0,100				2,00	22,0	12,0		0,20
904L N08904	0,020	2,00	0,040	0,030	1,00	19,0	23,0	4,0	0,10	-	Cu: 1,0-2,0	490	215	35	90
						23,0	28,0	5,0
S31803	0,030	2,00	0,030	0,020	1,00	21,0	4,5	2,5	0,080	-	-	620	450	25	HRC 30
						23,0	6,5	3,5	0,20
S32205	0,030	2,00	0,030	0,020	1,00	22,0	4,5	3,0	0,14	-	-	655	485	25	HRC 30
						23,0	6,5	3,5	0,20
S32750	0,030	1,20	0,035	0,020	0,80	24,0	6,0	3,0	0,24	-	Cu:≤0,5	800	550	15	HRC 34
						26,0	8,0	5,0	0,32
S32760	0,030	1,00	0,030	0,010	1,00	24,0	6,0	3,0	0,20	-	Cu:0,5-1,0	750	550	25	HRC 32
						26,0	8,0	4,0	0,30		W:0,5-1,0

Grade	Material number	C (max)	Si (max)	Mn (max)	P (max)	S (max)	N (max)	Cr	Mo	Ni	Ti	Nb
X5CrNi18-10	1.4301	0.070	1.00	2.00	0.045	0.015	0.11	17.00-19.50		8.00-10.50
X2CrNi19-11	1.4306	0.030	1.00	2.00	0.045	0.015	0.11	18.00-20.00		10.00-12.00
X2CrNiN18-10	1.4311	0.030	1.00	2.00	0.045	0.015	0.12-0.22	17.00-19.50		8.50-11.50
X6CrNiTi18-10	1.4541	0.080	1.00	2.00	0.045	0.015		17.00-19.00		9.00-12.00	5×C-0.70
X6CrNiNb18-10	1.4550	0.080	1.00	2.00	0.045	0.015		17.00-19.00		9.00-12.00		10×C-1.00
X5CrNiMo17-12-2	1.4401	0.070	1.00	2.00	0.045	0.015	0.11	16.50-18.50	2.00-2.50	10.00-13.00
X2CrNiMo17-12-2	1.4404	0.030	1.00	2.00	0.045	0.015	0.11	16.50-18.50	2.00-2.50	10.00-13.00
X6CrNiMoTi17-12-2	1.4571	0.080	1.00	2.00	0.045	0.015		16.50-18.50	2.00-2.50	10.50-13.50	5×C-0.70
X2CrNiMoN17-13-3	1.4429	0.030	1.00	2.00	0.045	0.015	0.12-0.22	16.50-18.50	2.50-3.00	11.00-14.00
X2CrNiMo18-14-3	1.4435	0.030	1.00	2.00	0.045	0.015	0.11	17.00-19.00	2.50-3.00	12.50-15.00
X3CrNiMo17-13-3	1.4436	0.050	1.00	2.00	0.045	0.015	0.11	16.50-18.50	2.50-3.00	10.50-13.00
X2CrNiMoN17-13-5	1.4439	0.030	1.00	2.00	0.045	0.015	0.12-0.22	16.50-18.50	4.00-5.00	12.50-14.50

Химический состав (%)
марка	C	Si	Mn	Cr	Ni	Mo	S	P	Ti
04Х18Н10	0,04	0,8	2	17~19	9~11	-	0,02	0,03	-
08Х18Н10Т	0,08	0,8	2	17~19	9~11	-	0,02	0,035	5*C~0,7
08Х18Н12Т	0,08	0,8	2	17~19	11~13	-	0,02	0,035	5*C~0,6
10Х17Н13М2Т	0,10	0,8	2	16~18	12~14	2~3	0,02	0,035	5*C~0,7
10Х23Н18	0,10	1	2	22~25	17~20	-	0,02	0,035	-
12Х18Н9	0,12	0,8	2	17~19	8~10	-	0,02	0,035	-
12Х18Н10Т	0,12	0,8	2	17~19	9~11	-	0,02	0,035	5*C~0,8
12Х18Н12Т	0,12	0,8	1~2	17~19	11~13	-	0,02	0,03	0,5~0,7
08Х17Т	0,08	0,8	0,8	16~18	-	-	0,025	0,035	5*C~0,8
12Х13	0,09~0,15	0,8	0,8	12~14	-	-	0,025	0,03	-
15Х25Т	0,15	1	0,8	21~37	-	-	0,025	0,035	5*C~0,9
08Х18Н12T	0,08	0,8	2	17~19	11~13	-	0,02	0,035	5*C~0,6
08Х22Н6Т	0,08	0,8	0,8	21~23	5,3~6,3	-	0,025	0,035	5*C~0,65

Outside Diameter		Wall Thicknesses Schedule ANSI/ASME B36.10M,B36.19M
DN(in)	D(mm)	SCH 5S	SCH 10S	SCH 10	SCH 20	SCH 30	SCH 40S	SCH STD	SCH 40	SCH 60	SCH 80s	SCH XS	SCH 80	SCH 100	SCH 120	SCH 140	SCH 160	SCH XXS
1/8"	10.3	-	1.24	-	-	-	1.73	1.73	1.73	-	2.41	2.41	2.41	-	-	-	-	-
1/4"	13.7	-	1.65	-	-	-	2.24	2.24	2.24	-	3.02	3.02	3.02	-	-	-	-	-
3/8"	17.1	-	1.65	-	-	-	2.31	2.31	2.31	-	3.2	3.2	3.2	-	-	-	-	-
1/2"	21.3	1.65	2.11	-	-	-	2.77	2.77	2.77	-	3.73	3.73	3.73	-	-	-	4.78	7.47
3/4"	26.7	1.65	2.11	-	-	-	2.87	2.87	2.87	-	3.91	3.91	3.91	-	-	-	5.56	7.82
1"	33.4	1.65	2.77	-	-	-	3.38	3.38	3.38	-	4.55	4.55	4.55	-	-	-	6.35	9.09
1-1/4"	42.2	1.65	2.77	-	-	-	3.56	3.56	3.56	-	4.85	4.85	4.85	-	-	-	6.35	9.7
1-1/2"	48.3	1.65	2.77	-	-	-	3.68	3.68	3.68	-	5.08	5.08	5.08	-	-	-	7.14	10.15
2"	60.3	1.65	2.77	-	-	-	3.91	3.91	3.91	-	5.54	5.54	5.54	-	-	-	8.74	11.07
2-1/2"	73	2.11	3.05	-	-	-	5.16	5.16	5.16	-	7.01	7.01	7.01	-	-	-	9.53	14.02
3"	88.9	2.11	3.05	-	-	-	5.49	5.49	5.49	-	7.62	7.62	7.62	-	-	-	11.13	15.24
3-1/2"	101.6	2.11	3.05	-	-	-	5.74	5.74	5.74	-	8.08	8.08	8.08	-	-	-	-	-
4"	114.3	2.11	3.05	-	-	-	6.02	6.02	6.02	-	8.56	8.56	8.56	-	11.13	-	13.49	17.12
5"	141.3	2.77	3.4	-	-	-	6.55	6.55	6.55	-	9.53	9.53	9.53	-	12.7	-	15.88	19.05
6"	168.3	2.77	3.4	-	-	-	7.11	7.11	7.11	-	10.97	10.97	10.97	-	14.27	-	18.26	21.95
8"	219.1	2.77	3.76	-	-	7.04	8.18	8.18	8.18	10.31	12.7	12.7	12.7	15.09	18.26	20.62	23.01	22.23
10"	273.1	3.4	4.19	-	6.35	7.8	9.27	9.27	9.27	12.7	12.7	12.7	15.09	18.26	25.4	28.58	25.4	-
12"	323.9	3.96	4.57	-	6.35	8.38	9.53	9.53	10.31	14.27	12.7	12.7	17.48	21.44	25.4	28.58	33.32	25.4
14"	355.6	3.96	4.78	6.35	7.92	9.53	-	9.53	11.13	15.09	-	12.7	19.05	23.83	27.79	31.75	35.71	-
16"	406.4	4.19	4.78	6.35	7.92	9.53	-	9.53	12.7	16.66	-	12.7	21.44	26.19	30.96	36.53	40.49	-
18"	457.2	4.19	4.78	6.35	7.92	11.13	-	9.53	14.27	19.05	-	12.7	23.83	29.36	34.93	39.67	45.24	-
20"	508	4.78	5.54	6.35	9.53	12.7	-	9.53	15.09	20.62	-	12.7	26.19	32.54	38.1	44.45	50.01	-
22"	558.8	4.78	5.54	6.35	9.53	12.7	-	9.53	-	22.23	-	12.7	28.58	34.93	41.28	47.63	53.98	-
24"	609.6	5.54	6.35	6.35	9.53	14.27	-	9.53	17.48	24.61	-	12.7	30.96	38.89	46.02	52.37	59.54	-

Outside Diameter		Stainless Steel Tube Weight (kg/m)
		Birmingham wire Gauge Conversion from BWG to mm
		25 BWG	22 BWG	21 BWG	20 BWG	19 BWG	18 BWG	17 BWG	16 BWG	15 BWG	14 BWG	13 BWG	12 BWG	11 BWG	10 BWG
mm	inch	0.51 mm	0.71 mm	0.81 mm	0.89 mm	1.07 mm	1.24 mm	1.47 mm	1.65 mm	1.83 mm	2.11 mm	2.41 mm	2.77 mm	3.05 mm	3.4 mm
6.35	1/4	0.074	0.1	0.112	0.121	0.141	0.158	0.179	0.193	0.206	-	-	-	-	-
9.53	3/8	0.115	0.156	0.176	0.192	0.225	0.256	0.295	0.324	0.351	0.39	0.427	0.466	-	-
12.7	1/2	-	0.212	0.24	0.262	0.31	0.354	0.411	0.454	0.496	0.557	0.618	0.685	0.733	0.788
15.88	5/8	-	0.268	0.304	0.332	0.395	0.452	0.528	0.585	0.64	0.724	0.809	0.905	0.975	1.057
19.05	3/4	-	0.324	0.368	0.403	0.479	0.55	0.644	0.715	0.785	0.89	0.999	1.123	1.216	1.325
25.4	1	-	-	0.496	0.543	0.648	0.746	0.876	0.976	1.074	1.224	1.38	1.561	1.698	1.863
31.75	1 1/4	-	-	-	0.684	0.818	0.942	1.109	1.237	1.364	1.558	1.761	2	2.18	2.401
38.1	1 1/2	-	-	-	-	0.987	1.139	1.341	1.498	1.653	1.892	2.143	2.438	2.663	2.939
44.5	1 3/4	-	-	-	-	1.158	1.336	1.576	1.761	1.945	2.228	2.527	2.879	3.149	3.481
50.8	2	-	-	-	-	1.325	1.531	1.806	2.02	2.232	2.559	2.905	3.314	3.628	4.014
63.5	2 1/2	-	-	-	-	-	-	2.271	2.542	2.811	3.227	3.667	4.19	4.593	5.09
76.2	3	-	-	-	-	-	-	-	3.064	3.39	3.894	4.43	5.067	5.558	6.166
88.9	3 1/2	-	-	-	-	-	-	-	3.586	3.969	4.562	5.192	5.943	6.522	7.241
101.6	4	-	-	-	-	-	-	-	4.108	4.548	5.229	5.955	6.819	7.487	8.317
114.3	4 1/2	-	-	-	-	-	-	-	-	-	5.897	6.717	7.696	8.452	9.393

Summary	Standards
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes	ASTM A 213 / A 213M
Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service	ASTM A269 / A 269M
Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes	ASTM A312/A312M
Standard Specification for Seamless Stainless Steel Mechanical Tubing and Hollow Bar	ASTM A511 / A 511M
Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service	ASTM A789/A789M
Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe	ASTM A790/A790M
Standard Specification For Seamless Stainless Steel Tubes,cold and hot finished	GOST9941-2022
Standard Specification For Seamless Stainless Steel Tube for Pressure purposes	EN 10216-5

Standard	Outside Diameter Tolerance(mm)		Thickness Tolerance		Length Tolerance (mm)
ASTM A213	D<25.4	±0.1	D≤38.1	+20%/-0%	D≤50.80	+3/-0
	[25.4~38.1]	±0.15
	(38.1~50.8)	±0.2	D>38.1	+22%/-0%	D>50.8	+5/-0
	[50.8~63.5)	±0.25
	[63.5~76.2)	±0.30
	[76.2~101.6]	±0.38
	(101.6~190.5]	+0.38/-0.64
	(190.5~228.6]	+0.38/-1.14
ASTM A312 A790	[10.29~48.26]	+0.4/-0.8	10.3~73	+20% / -12.5%	+6/-0
			88.9~457 T/D≤5%	+22.5%/-12.5%
	(48.26~114.30]	±0.80	88.9~457 T/D>5%	+15%/-12.5%
	(114.30~219.08]	+1.6/-0.8	508above T/D<5%	+22.5%/-12.5%
	(219.08~457.20]	+2.4/-0.8	508above T/D>5%	+15%/-12.5%
ASTM A269 A789	D<12.7	±0.13	±15%		+3/-0
	(12.7~38.1]	±0.13	±10%
	[38.1~88.9)	±0.25			+5/-0
	[88.9~139.7)	±0.38
	[139.7~203.2)	±0.76
ASTM A270	<25.40	±0.13	±12.5%		+3/-0
	(25.4~50.8]	±0.20
	(50.8~76.2]	±0.25
	(76.2~101.6]	±0.38
	(101.6~139.7]	±0.38			+5/-0
	(139.7~203.2]	±0.75%
	(203.2~304.8]	±1.25%
EN10216-5	D3	±0.75%/±0.30	T3	±10%/ ±0.20mm	L≤6m	+5/-0
	D4	±0.5%/±0.10	T4	±7.5% / ±0.15mm	≥6~12m	+10/-0
ГОСТ 9941-2022 (except 06ХН28МДТ)	D<10	Normal:±0.30	T<0.3	Normal:±0.05 mm	+15/-0
				High:±0.03 mm
		High:±0.20	(0.3~0.4]	Normal:±0.07 mm
				High:±0.05 mm
		Higher:±0.15	(0.4~0.6]	Normal:±0.10 mm
				High:±0.07 mm
	(10~30]	Normal:±0.40	(0.6~1.0]	Normal:±0.15 mm
				High:±0.10 mm
		High:±0.30	(1~3] D/S <40	Normal:+12.5%/-15%
				High:±12.5%
		Higher:±0.20		Higher:+12.5%/-10%
			(1~3] D/S >40	Normal:±15%
	(30~95]	Normal:±1.2%		High:+12.5%/-15%
		High:±1%	(3~7] D/S <40	Normal:±12.5%
		Higher:±0.8%		High:+12.5%/-10%
	D>95 D/S <40	Normal:±1.2%		Higher:±10%
		High:±1%	(3~7] D/S >40	Normal:+12.5%/-15%
		Higher:±0.8%		High:±12.5%
	D>95 D/S >40	Normal:±1.5%	T>7 D<325	Normal:+12.5%/-10%
		High:±1.2%		High:±10%
		Higher:±1.0%	T>7 D>325	Normal:+12.5%/-15%
				High:±12.5%

Packaging & Shipping Certifications

Guohao Steel welcomes direct customer inspections as well as those conducted by their appointed third-party inspection agencies, including but not limited to SGS, Bureau Veritas (BV), TÜV, DNV, and other internationally recognized organizations. We provide a comprehensive set of documentation, including Manufacturer's Test Certificate (TC) in accordance with EN 10204 Type 3.1, Raw Material Certificate, Heat Treatment/Dimensional Non-Destructive Testing (HT/NDT) Reports, and Third-Party Inspection Reports.

Material Testing: All materials undergo rigorous quality control testing prior to shipment to ensure full compliance with applicable standards and customer specifications. The testing program includes the following:

1. Mechanical Test
2. Hardness Test
3. Chemical Analysis (OES)
4. Positive Material Identification (PMI)
5. Flattening Test
6. Flaring Test
7. Intergranular Corrosion (IGC) Test
8. Non-Destructive Test(HT/ET/UT)

PRODUCT APPLICATION Company Profile

Wenzhou Guohao Steel was established in 2008 and is an ISO 9001:2015 certified manufacturer with advanced infrastructure to ensure efficient production. The company is deeply engaged in the high-tech industry, featuring a stable core team and rich technical accumulation, with services covering multiple fields.
Our product range includes a full series of stainless steel and high-performance nickel alloys. We strictly adhere to environmental, health, safety, ethical trade, and export regulations, and possess comprehensive compliance capabilities.
Relying on the direct supply advantage of materials such as stainless steel and nickel alloys, we provide pipeline supply and processing services for key industries, serving clients from small and medium-sized enterprises to global manufacturers. With quality, reliability, and authoritative certifications, we help our clients succeed in the competitive market.
We continuously upgrade our equipment, optimize production capacity, and attach great importance to team building to solidify the foundation of our services. Upholding our core values, we create reliable professional value and long-term cooperative benefits for our clients.

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