ASTM A312 A358 A778 A789 A928 Large Diameter DN150~1800 Stainless Steel Industrial Welded Pipe

• Customization: Available
• Application: Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry
• Certification: ISO9001
• Model NO.: large diameter WLD pipe
• Length: 6M or customize
• Material: 304 Stainless Steel
• Outer Diameter: 24 inch
• Type: Welded Pipe
• Wall Thickness: Schedule 10
• Welding Methods: EFW / ERW / PAW / GTAW
• Test: RT(Radiographic Examination)CL.1
• Delivery Time: Stock 7 Days; MTO 30 Days
• Trade Terms: EXW, FOB, FCA, CFR, CIF etc.
• Markings: ASTM A358 TP304L 660.4x7.92x6000MM HEAT NO.:
• Transport Package: Packed in Bundles
• Specification: DN150 - 1800
• Trademark: GH-STEEL
• Origin: China
• HS Code: 7306110000
• Production Capacity: 2000ton Per Month

Product Description

Product Description

Product Name	Welded Stainless Steel Pipes /Tubes Нержавеющая сталь сварные трубы Tubos Soldados de AÇO INOXIDÁVEL Tubos soldados de acero inoxidable
Company Inform	1.Name:WENZHOU GUOHAO STEEL., LTD   2.Type: Manufacturer
Material	Austentic / Duplex Steel Duplex : UNS S31803,UNS S32750, UNS S32760 Austenitic :TP304, TP304L, TP304H, TP309S, TP310S, TP316L, TP316Ti, TP317L, TP321, TP321H, TP347H , 904L, 254SMO
Standard	ASTM A312/A358/A778/A790/A928 etc
Welding Line Type	EFW / ERW / PAW /GTAW ERW Welded Pipe: ERW welding is a welding process that utilizes an electric current to create a high-heat source, which fuses the edges of steel strip or plate together, forming a welded seam in a continuous and efficient manner. EFW Welded Pipe: EFW welding is a submerged arc welding process that combines an electric arc and electrical resistance heating to join the edges of steel plate or strip together, creating a strong and efficient welded seam. PAW+GTAW Welding Pipe: PAW+GTAW welding refers to the combination of Plasma Arc Welding (PAW) and Gas Tungsten Arc Welding (GTAW), where a focused plasma arc and a tungsten inert gas arc are used together to achieve precise and high-quality welds in various applications.
Specification	Outer diameter	168mm-1828mm DN150-1800 6nch -72 inch
	Wall thickness	3mm-60mm SCH5s, SCH10S ,SCH10 ,SCH20, SCH30, SCH40s, SCH STD, SCH40, SCH60, SCH80s, SCH XS, SCH100, SCH120, SCH140, SCH160, SCHXXS
	Length	6M,12M or as customer's actual request
Surface	Annealing&Pickling, Polishing (180#-600#), Bright Annealing, Sand Blasting,Shot Blasting
Packaging and Container Loading	For Packaging and Container Loading, large-diameter pipe ports supported by wooden frames, the pipe end used cap or tape protection. And we can use the nesting loading to save transportation cost.
Hydraulic pressure testing	OD≤1.5m
RT(X-Ray)  Inspection	100% filming Class 1 / 2 / 3/ 4/ 5
Delivery Time	1.for ready stock :7 days after receiving the deposit of T/T 2.For MTO: 35 days after receiving the  deposit of T/T
Trade Terms	EXW,FOB, CFR, CIF etc.
Loading Port	Ningbo/Wenzhou/Shanghai
Remittance method	TT/DP/LC/CASH
Container	20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM
Application	Widely used in Pharmaceuticals,Pharmaceutical Equipment,Chemical Equipment,Sea Water Equipment,Heat Exchangers,Condensers,Pulp and Paper Industry,Off-Shore Oil Drilling Companies,Power Generation,Petrochemicals,Gas Processing,Specialty Chemicals etc.

Product Parameters

Chemical Composition for Stainless Steel / Duplex Stainless Welded Pipes

Grade	Mn (Max)	P (Max)	S (Max)	Si (Max)	Cr	Ni	Mo	Nitrogen (Max)	Cu/ Others
304	2.00	0.045	0.030	1.00	18.00~20.00	8.00~10.50	-	-	-
304L	2.00	0.045	0.030	1.00	18.00~20.00	8.00~12.00	-	-	-
304H	2.00	0.045	0.030	1.00	18.00~20.00	8.00~12.00	-	-
310S	2.00	0.045	0.030	1.50	24.00~26.00	19.00~22.00	-	-	-
316	2.00	0.045	0.030	1.00	16.00~18.00	11.00~14.00	2.00~3.00	-	-
316L	2.00	0.045	0.030	1.00	16.00~18.00	10.00~14.00	2.00~3.00	-	-
316Ti	2.00	0.045	0.030	0.075	16.00~18.00	10.00~14.00	2.00~3.00	0.10	Ti:5x C Min
317L	2.00	0.045	0.030	1.00	18.00~20.00	11.00~15.00	3.00~4.00	-	-
321	2.00	0.045	0.030	1.00	17.00~19.00	9.00~12.00	-	0.10	Ti:5xC Min
321H	2.00	0.045	0.030	1.00	17.00~19.00	9.00~12.00	-	0.10	Ti:4xC Min
347H	2.00	0.045	0.030	1.00	17.00~19.00	9.00~13.00	-	-	Nb:8C~1.0
S31803	2.00	0.030	0.020	1.00	21.00~23.00	4.50~6.50	2.50~3.50	0.08~0.20	-
S32205	2.00	0.030	0.020	1.00	22.00~23.00	4.50~6.50	3.00~3.50	0.14~0.20	-
S32750	1.20	0.035	0.020	0.80	24.00~26.00	6.00~8.00	3.00~5.00	0.24~0.32	Cu:0.50 Max
S32760	1.00	0.030	0.010	1.00	24.00~26.00	6.00~8.00	3.00~4.00	0.20~0.30	Cu:0.5~1.0 W:0.5~1.0
904L	2.00	0.040	0.030	1.00	19.00~23.00	23.00~28.00	4.00~5.00	0.10	Cu:1.0~2.0

Dimesion Coparison Table for Stainless Steel / Duplex Stainless Welded Pipes

Norminal Pipe Size	Outside Diameter	Wall Thicknesses Schedule ANSI/ASME B36.10M,B36.19M
DN(in.)	D	sch5s	sch10s	sch10	sch20	sch30	sch40s	STD	sch40	sch60	sch80s	XS	sch80	sch100	sch120	sch140	sch160	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
1¼	42.2	1.65	2.77	---	---	---	3.56	3.56	3.56	---	4.85	4.85	4.85	---	---	---	6.35	9.7
1½	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
2½	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
3½	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
26	660.4	---	---	7.92	12.7	---	---	9.53	---	---	---	12.7
28	711.2	---	---	7.92	12.7	15.88	---	9.53	---	---	---	12.7
30	762	6.35	7.92	7.92	12.7	15.88	---	9.53	---	---	---	12.7
32	812.8	---	---	7.92	12.7	15.88	17.48	9.53	17.48	---	---	12.7
34	863.6	---	---	7.92	12.7	15.88	17.48	9.53	17.48	---	---	12.7
36	914.4	---	---	7.92	12.7	15.88	19.05	9.53	19.05	---	---	12.7
38	965.2	---	---	---	---	---	---	9.53	---	---	---	12.7	Note: sch5s,10s,40s,80s Used for seamless pipe
40	1016	---	---	---	---	---	---	9.53	---	---	---	12.7
42	1066.8	---	---	---	---	---	---	9.53	---	---	---	12.7
44	1117.6	---	---	---	---	---	---	9.53	---	---	---	12.7
46	1168.4	---	---	---	---	---	---	9.53	---	---	---	12.7
48	1219.2	---	---	---	---	---	---	9.53	---	---	---	12.7

 Standard for Welded Stainless Steel /Duplex Stainless Pipe

Summary	Standards
Standard Specification For Seamless and Welded Austenitic Stainless Steel Tubing for General Service	ASTM A269
Standard Specification For Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes	ASTM A312
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products	ASTM A778
Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Pipes for General Service	ASTM A789
Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Pipes.	ASTM A790
Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Pipes.	ASTM A928
Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes	EN 10217-7

 ASTM A269/A312/A358/A789/A790/EN10217-7 Standard Dimensional Tolerance for Stainless Steel / Duplex Stainless Welded Pipes

Standard	Outside Diameter Tolerance(mm)		Thickness Tolerance(mm)		Length Tolerance (mm)
ASTM A269 ASTM A789	<12.7	±0.13	±15%		+3.2 / -0
	(12.7~38.1]	±0.13	±10%
	[38.1~88.9)	±0.25			+4.8 / -0
	[88.9~139.7)	±0.38
	[139.7~203.2)	±0.76
ASTM A312 ASTM 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 A358	[219.08~780]	+0.5%/-0.5%	-0.3mm		+6 / -0
EN10217-7	≤168.3	D3:±0.75% / ±0.30mm	T3: ±10%/ ±0.20mm		L≤6m	5
	114.3	D2:±1.0%			≥6~12M	10

 

Company Profile

Wenzhou Guohao Steel was established in 2008. We are ISO 9001:2015 approved manufacturer, having a state-of-the-art infrastructure facility for having smooth production process. It has successfully grown by focusing on serving customers across a range of high technology industries. One of our company strengths is its people, with many colleagues having been with the company from the beginning. This provides our customers with the benefit of a wealth of experience and industry knowledge. Guohao Steel now has the whole of manufactured stainless steel products to add to its already large range of High Performance Nickel Alloys.
Guohao Steel adhere to the high standards of integrity and compliance required, including:

1. Environmental standards
2. Health and safety standards
3. Ethical trading standards
4. Export compliance requirements

We now stock and have direct access to a wide range of other materials, including stainless steels and nickel alloys. We supply and process pipes for numerous key industry sectors, collaborating with both small businesses and large international manufacturers across various countries. Due to our reputation for quality, reliability, and industry approvals, we are a well-regarded supplier in diverse sectors. Our delivery of long-term tangible benefits enables our customers to compete in today's challenging global marketplace.
In order to achieve our goals, we are improving our facilities and expanding our machinery to offer broader processing capabilities. Additionally, our investment extends to the growth and development of our teams, which represent our most valuable resource. We aim for our customers to receive the best experience and trust in the expertise, knowledge, and experience of our teams. As we continue looking towards the future, we rely on our core values to guide both decisions and actions.

Packaging & Shipping

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.

The inspection of our company and products is open to customers themselves or their designated third-party inspectors, such as SGS, BV, TUV, DNV, etc., who are well-known in the industry.

We provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075.
• EN 10204/3.1B
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report
Material Testing: We ensure that all our materials go through strict quality tests before dispatching them to our clients.
• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis - Spectro Analysis
• Positive Material Identification - PMI Testing
• Flattening Test
• Micro and MacroTest
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test

 

PRODUCT APPLICATION

• Pharmaceuticals
• Pharmaceutical Equipment
• Chemical Equipment
• Sea Water Equipment
• Heat Exchangers
• Condensers
• Pulp and Paper Industry
• Off-Shore Oil Drilling Companies
• Power Generation
• Petrochemicals
• Gas Processing
• Specialty Chemicals

Our Advantages

More than 16 Years of Experience in Stainless Steel Production.
Provides cost-effective products and professional services to you.
We offer an extensive range of stainless steel, super duplex steel,nickel alloy.

FAQ

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.