ASTM A312 Duplex Seamless Tube Supplier in China

• Customization: Available
• Standard: DIN, JIS, AISI, ASTM, GB
• Technics: Cold Drawn
• Model NO.: ASTM A312
• Application: Structural Steel Bar
• Surface: Galvanized
• Alloy: Alloy
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Cold Heading Steel, Mold Steel
• Materials: 10#-45#,20mng,25mng,15crmog,35CrMo,16mn,etc
• Outer Diameter: 4-219mm
• Length: 5.8m-12m or as Required
• Thickness: 5 - 20 mm
• Steel Grade: ASTM A312
• Transport Package: in Bundles or Wooden Box
• Specification: Duplex Seamless Tube
• Trademark: JIADE
• Origin: China
• HS Code: 7307930000
• Production Capacity: 5000tons

Product Description

Product Parameters

 

Model Number	Duplex Seamless Tube supplier
Brand Name	OEM
origin	China
Small Orders	Accepted

Duplex Seamless Tube supplier in China

The Duplex Steel Pipe gets its name from the dual nature present in the microstructure of the alloy. Duplex Stainless Steel Seamless Pipe have good mechanical characteristics and can be used in an as welded condition. Considered to be superior in comparison to austenitic alloys ASTM A312 TP304 or ASTM A312 TP316, the Seamless Duplex Pipe offers much better resistance to corrosion.

Duplex Pipe in custom length and sizes

This property is particularly noticed when the Duplex Stainless Steel Pipe has been exposed to environments that contain corrosive compounds that can cause chloride stress corrosion as well as chloride pitting corrosion. The Duplex Welded Pipe also has much higher tensile strength properties as opposed to the standard austenitic stainless steel grades. The Duplex Steel Pipes are almost exclusively used in the offshore oil and gas industry. The lower content of nickel used to alloy Duplex Pipe is why the metal is economical. As one of the foremost distributors and A790 Duplex Pipe manufacturer, we supply good quality products to our buyers. You can find the Duplex Pipe Price List here.

Are you looking for Duplex Pipe manufacturers in China?

We at Jiade producing Duplex Stainless Steel Seamless, welded and  ERW Pipe since 2008. Our manufacturing range start from 4mm to 219mm in SMLS and 5mm to 1219.2 mm in Welded. We can also manufacture custom sizes if quantity is above 10 Tons. The advantage to choose Duplex Stainless Steel Pipe manufacturer is to get 10% lower price compare to stockist and supplier in China quality material with Mill test Certificate. We also provide warranty of all our Duplex Steel Pipes & Tubes. We are associated with many traders, stockholders and distributors China. 

Manufacturer and supplier of Duplex Steel Welded Pipes, and subsea tubes in custom length and wall thickness
Duplex PipeDuplex Seamless PipeDuplex Welded Pipe

Table of contents

• Duplex Stainless Steel Pipe sizes
• ASTM A789 Steel Pipe Specification
• Duplex stainless steel pipe grades
• Most famous types of Duplex Steel Pipe
• Duplex stainless steel tube price in China
• ASTM A790 DSS Pipe roughness
• Duplex Stainless Pipe Chemical Composition
• Stainless Steel Duplex Equivalent
• Duplex Pipe Schedule Chart
• Applications and uses of Duplex Steel Pipe
• DSS Pipe Weight Chart

Duplex Stainless Steel Pipe sizes
Duplex Stainless Steel Seamless Pipe
Size: 4 - 219mm
Thickness : 0.5 - 20mm
Length: Single, Double Random & Cut Length
Duplex Steel Welded Pipe
Size: 5.0 - 1219.2 mm
Thickness : 0.5 - 20mm
Length: Single, Double Random & Cut Length
ASTM A789 Steel Pipe Specification

Standard Specification	ASTM A790 ASME SA790, F51
Manufacturing Type	Seamless / ERW / Welded / Fabricated / CDW / CDS / DOM / CEW / 100% X Ray Welded
Thickness Range	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS
Origin	Europe, USA, South Korea
Standard	SUS, JIS, AISI, ASTM, GB, DIN, EN
Value Added Services	Cutting Beveling Threading Destructive and Non Destructive Ultrasonic Testing Draw & Expansion as per required Size & Length
END	Plain End, Beveled End, Treaded ASTM A790 DSS Pipe
Marking	Specification Material Grade Nominal Size Schedule or Wall Thickness Method of Manufacturing (Seamless / Welded) Heat Number Manufacturer / Supplier Name or Custom Logo - on request
Test Certificate	Third Party Inspection (TPI) Moisture testing Manufacturer Test Certificate Fumigation Certificates 100% Radiography Test Report DFARS compliant EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC) Laboratory Test Certificate from Govt. Approved Lab Raw Materials Certificate HS Code Commercial Invoice Heat Treatment Charts Surface roughness measurement Form A for Generalized System of Preferences (GSP)
Packaging	Packed in PE Fabric Bundles or ply wooden box wrapped in plastic or Standard seaworthy export packing or as per customers' request
Port	Tianjin,China.
Why choose Oshwin?	Lowest price Better price stability Higher strength leading to weight saving High corrosion resistance particularly stress corrosion cracking

Duplex stainless steel pipe grades

• Duplex 2205 Pipe
• Duplex 2205 Tube
• Super Duplex 2507 Pipe
• Super Duplex 2507 Tube
• ASTM A789 UNS 32520
• ASTM A789 UNS 32900
• ASTM A789 UNS 31260

Duplex stainless steel tube price in China

DUPLEX STAINLESS STEEL	*PRICE START RANGE PER KG EX MUMBAI
MANUFACTURING TYPE	USA FOB PRICE*	MALAYSIA FOB PRICE*	EUROPE FOB PRICE *	SINGAPORE FOB PRICE*
Seamless Pipe	US $ 6	24.22 Malaysia Ringgit	4.88 Euro	7.94 Singapore Dollar
Seamless Tube	US $ 11	44.41 Malaysia Ringgit	8.95 Euro	14.56 Singapore Dollar
Welded Pipe	US $ 4	16.15 Malaysia Ringgit	3.26 Euro	5.29 Singapore Dollar

ASTM A790 DSS Pipe roughness

Outside surface roughnes	Inside surface roughness
RA 20 defect level max. 50 μm	RA 20 defect level max. 20 μm

Duplex Stainless Pipe Chemical Composition

MATERIAL	COMPOSITION % (APPROX)
	Cr	Ni	Mo	N	Mn	W	Cu
2101 LDX	21.5	1.5	0.3	0.22	5	-	-
DX2202	23	2.5	0.3	0.2	1.5	-	-
RDN 903	20	1.8	0.2	0.11	4.2	-	-
2304	23	4.8	0.3	0.10	-	-	-
2205	22	5.7	3.1	0.17	-	-	-
2507	25	7	4	0.27	-	-	-
Zeron 100	25	7	3.2	0.25	-	0.7	0.7
Ferrinox 255/ Uranus 2507Cu	25	6.5	3.5	0.25	-	-	1.5

Features & Benefits

Buy directly from Duplex pipe manufacturer for genuine material, low price and quick deliveries globally, manufactured accordance to ASTM A790/ ASTM A928 American specification

• More hard to machine and form than austenitics material
• Double design strength of austenitic and ferritic stainless steels
• Weldable with extra care in thick material
• Temperature limit 300 °C maximum
• Better toughness down to minus 80 °C but not suitable for cryogenic applications
• Various range of corrosion resistance to match application
• Best for resistance to stress corrosion cracking

Stainless Steel Duplex Equivalent

GRADES	EN (WNR.) / UNS NO	TYPE
LDX 2101 Pipe	1.4162/ S32101	Lean
DX2202	1.4062/ S32202	Lean
RDN 903	1.4482/ S32001	Lean
LDX 2304	1.4362/ S32304	Lean
2205 Pipe	1.4462/ S31803/ S32205	Standard
2507 Pipe	1.4410/ S32750	Super Duplex
Zeron 100 Pipe	1.4501/ S32760	Super Duplex
Ferrinox 255/ Uranus 2507Cu Pipe	1.4507/ S32520/ S32550	Super Duplex
Ferralium 255 Pipe	1.4501/ UNS S32760	Super Duplex
Hyper	1.4658/ S32707 / S33207	HDSS

Duplex Pipe Schedule Chart

1/8" IPS(.405" O.D.)	3 1/2" IPS( 4.000" O.D.)
Seamless Pipes, SCH 40, 80	Pipes, SCH 10, 40, 80, 160, XXH
1/4" IPS(.540" O.D.)	4" IPS(4.500" O.D.)
Pipes, SCH 10, 40, 80	Seamless Pipes, SCH 10, 40, 80, 160, XXH
3/8" IPS(.675" O.D.)	5" IPS( 5.563" O.D.)
Seamless Pipes, SCH 10, 40, 80	Pipes, SCH 10, 40, 80, 160, XXH
1/2" IPS(.840" O.D.)	6" IPS(6.625" O.D.)
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH	Seamless Pipes, SCH 5, 10, 40, 80, 120, 160, XXH
3/4" IPS(1.050" O.D.)	8 " IPS(8.625" O.D.)
Pipes, SCH 10, 40, 80, 160, XXH	Stainless Pipes, SCH 5, 10, 40, 80, 120, 160, XXH
1" IPS:(1.315′ O.D.)	10" IPS(10.750" O.D.)
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH	Pipes, SCH 10, 20, 40, 80 (.500), TRUE 80(.500)
1-1/4" IPS(1.660" O.D.)	12" IPS(12.750" O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH	Pipes, SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)
1-1/2" IPS(1.900" O.D.)	14" IPS(14.000" O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH	Pipes, SCH10 (.188), SCH40 (.375)
2" IPS(2.375" O.D.)	16" IPS(16.000" O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH	Pipes, SCH10(.188), SCH40(.375)
2 1/2" IPS(2.875" O.D.)	18" IPS (18.000" O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH	Pipes, SCH-40 (.375)
3" IPS( 3.500" O.D.)
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH

Applications and uses of Duplex Steel Pipe

• Off-Shore Oil Drilling Companies
• Petrochemicals Plants
• DSS Pipes for production and transportation of oil and gas
• Condensers
• Power Generation
• Gas Processing
• Heat exchangers
• Structural and mechanical components
• Cooling pipes
• Sea Water Equipment
• Chemical and Pharmaceutical Equipment

DSS Pipe Weight Chart

OUTSIDE DIA MM	WALL THK MM	IN.	SCHEDULE	KG/M
13.72	1.65	1/4	10S	0.50
13.72	2.24	1/4	40S	0.64
13.72	3.02	1/4	80S	0.81
17.15	1.65	3/8	10S	0.64
17.15	2.31	3/8	40S	0.86
17.15	3.20	3/8	80S	1.12
21.34	2.11	1/2	10S	1.02
21.34	2.77	1/2	40S	1.29
21.34	3.73	1/2	80S	1.65
26.67	2.11	3/4	10S	1.30
26.67	2.87	3/4	40S	1.71
26.67	3.91	3/4	80S	2.23
33.40	2.77	1	10S	2.13
33.40	3.38	1	40S	2.54
33.40	4.55	1	80S	3.29
33.40	6.352)	1	160	4.30
42.16	2.77	1¼	10S	2.73
42.16	3.56	1¼	40S	3.44
42.16	4.85	1¼	80S	4.53
42.16	6.352)	1¼	160	5.69
48.26	2.77	1½	10S	3.16
48.26	3.68	1½	40S	4.11
48.26	5.08	1½	80S	5.49
60.33	2.77	2	10S	3.99
60.33	3.91	2	40S	5.52
60.33	5.54	2	80S	7.60
60.33	8.742)	2	160	11.29
73.03	3.05	2½	10S	5.35
73.03	5.16	2½	40S	8.77
73.03	7.01	2½	80S	11.59
88.90	3.05	3	10S	6.56
88.90	5.49	3	40S	11.47
88.90	7.62	3	80S	15.51
88.90	11.132)	3	160	21.67
101.60	3.05	3½	10S	7.53
101.60	5.74	3½	40S	13.78
101.60	8.08	3½	80S	18.92
114.30	3.05	4	10S	8.50
114.30	6.02	4	40S	16.32
114.30	8.56	4	80S	22.67
114.30	13.492)	4	160	34.05
141.30	6.55	5	40S	22.10
141.30	9.53	5	80S	31.44
141.30	15.882)	5	160	49.87
168.28	3.4	6	10S	14.04
168.28	7.11	6	40S	28.69
168.28	10.97	6	80S	43.21
168.28	14.27	6	120	54.75
168.28	18.262)	6	160	68.59
219.08	8.18	8	40S	43.20
219.08	12.7	8	80S	65.63
219.08	18.23	8	120	91.30
219.08	23.012)	8	160	112.97

Detailed Photos

 

Company Profile

Lead time 10-15 days | 80% of output for export

A Trading Company Specializing in Steel Industry for Over 30 Years
Shaanxi Jiade Import & Export is one of the leading professional steel pipes and pipe fitting suppliers, established in 1991 and charge of the export business. We have more than 30 years' experience in manufacturing, distributing, processing, and exporting hot rolled and cold drawn seamless, ERW, EFW, HFW, LSAW, DSAW, and SSAW pipes boiler tubes, heat-exchanger tubes, condenser tubes, super-heater tubes, hydraulic honed tubes, mechanical tubes, structural tubes, line pipes, elbows, tees, reducers, and flanges. We mainly export products to Africa, Asia, Europe, Oceania, and North and South America.

Supported by Machines and Equipment
All our products are manufactured with the latest manufacturing techniques with machines and equipment, which are fitted with the highest technology, to provide products in full conformity with international standards.

Meeting Inspection and Approval Certificates
We have passed the Mill Test certificate, C/W certificate (Calibration works certificate) EN 10204 3.1, DIN 50049 3.1, ISO 10474 3.1, NACE MR-0103/NACE MR-0175/ISO 15156, PED-97/23/EC, AD-2000-WO, with 3.2 certificates duly certified and approved by LRS, GL, BV, DNV, ABS, SGS, TUV, RINA, IRS, NORSOK and more.

Customized Service
We provide product customization services such as shot blasting, precision pipe cutting, cut and roll grooving, custom pipe fabrication, pipe threading, pipe beveling, and coating. They are also approved by Third Party inspection agencies like DNV, BV, SGS, Moody, TuV, ABS, LR, GL, PED, RINA, KR, NKK, AIB-VINEOTTE, CEIL, VELOSI, CCSI, and more. We supply for PetroVietnam, WSF, YPFB, AWH, HMC, PTT, EP PetroEcuador, POD, KNPC, and more.

Establishing Friendly Partnership
Our mission is whether our clients are active in the oil and gas, water supply line, or construction, we endeavor to deliver the highest quality products and value-added services to support our clients' business. We pursue a win-win situation and long-term cooperative relationships with customers, providing specializing service for the old and new customers with better and more economical results.

Packaging & Shipping

Shipping Information

FOB Port	Tianjin
Weight per Unit	1500.0 Kilograms
HTS Code	7304.41.90 00
Export Carton Dimensions L/W/H	11.8 x 1.0 x 0.8 Meters

Lead Time	15-30 days
Dimensions per Unit	11.8 x 1.0 x 0.8 Meters
Units per Export Carton	25.0
Export Carton Weight	1500.0 Kilograms

Certifications

Main Export Markets

- Asia

- Australasia

- Central/South America

- Eastern Europe

- Mid East/Africa

- North America

- Western Europe

- <li>Southeast Asia