Zhongzheng Stainless Steel Co., Ltd.: 1Yr

Tianjin, China; Main products: Stainless Steel, Valve, Flange, pipe fitting

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Home > Products > Industrial Pipeline Series > ASTM A789/A789m Uns S31803 Duplex Steel Pipe Seamless Tubes ASTM A790/A790

ASTM A789/A789m Uns S31803 Duplex Steel Pipe Seamless Tubes ASTM A790/A790

FOB Price

US$ 2200 - 3000 / Ton

1 Ton(Min. Order)

Payment TermsT/T L/C PayPal D/P Western Union Other
Delivery Detail8 days

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Product Details

Type	Stainless Steel Pipes	Certification	ISO, ROHS, IBR, AISI, ASTM, GB, EN, DIN, JIS, Other
Shape	Round	Grade	Other
Technique	Other	Surface Treatment	Polished
Standard	ASTM, AISI, GB, JIS, DIN, EN, Other	Specification	OEM
Trademark	ZHONGZHENG INTERNATIONAL	Origin	China

Product Description

seamless steel pipe

Basic Info.

Model NO.

ASTM A789/A789M UNS S31803 Duplex Steel Pipes

Length

Max 50m

Material

A270

Outer Diameter

3.18-810mm

Type

Seamless Pipe

Wall Thickness

0.2-40mm

Steel Grade

A480/1016/A789

Technique

Hot Rolled/Cold Drawn

Shape

Round/Customized

Process

Polished/Solution Treatment

Condition

Hot Finished/Cold Finished

End

Plain End/Bevel End

Usage

Heat Transfer

Test

BV, SGS Is Available

Stock

Size Can Customized

Processing

Customized

Thickness

1-150mm

Used

Factory, Decoration, Food

Packing

Standard Export Packing

Delivery Time

10-30 Working Days

Size

1/4"-4"

Transport Package

Woven Bag/Wooden Case

Specification

SCH 5S-SCH160

Trademark

ZHONGZHENG

Origin

China

Production Capacity

1000000 Kgs/Year

Product Description

Product Name	ASTM A789/A789m UNS S31803 Duplex Steel Pipe Seamless Tubes
Size	OD	3.18-810mm
	Thickness	0.2-40mm
	Max Length	50m
Usage	Gas Industry, Oilfield, Thermal power, Oil industry, Shipbuilding, Petrochemical, Tanker, Nuclear , etc
Surface	Pickling and annealing,pickling and annealing+polishing+ EP(Electricity polish)
End	Plain, Beveled with caps
Package	Reinforced plywood case bysted angle bar, Playwood cased Plastic bags packing, Condenser, heat exchanger tube packing, U-tube packed with wooden cases.
Inspection	With Hydraulic Testing, Ultrasonic testing or X-ray Test
TPI	TUV, SGS, BV, Lloyd's, etc.
Payment:	L/C at sight, L/C 180 days, T/T, D/P, OA, Western Union,
Port of Shipment	Shanghai port in China

Standard: ASTMA789M/789

Material/Steel Grade: S31803, S32205, S32750

Application: Seamless Duplex Stainless Steel Tubing for General Service

Size: OD: 19.0~60.5mm WT: 1.2~5.0mm

Standard: ASTM A789M/789

Material/Steel Grade: S31803, S32205, S32750

Application: Seamless Duplex Stainless Steel Tubing for General Service

Size: OD: 19.0~60.5mm WT: 1.2~5.0mm

ASTM A789/A789M:

This standard covers the manufacturing requirements for stainless steel and other austenitic stainless steel straight and spiral seam pipes.
Pipes are typically used under general service conditions and are suitable for general corrosive environments and low or high-temperature service.

ASTM A790/A790M:

This standard covers the manufacturing requirements for duplex (austenitic-ferritic) stainless steel seamless and welded pipe.
Pipes are usually used in high-temperature, high-pressure, or corrosive environments with higher corrosion resistance and mechanical strength.

The key differences are the type of material and application area of the pipe. ASTM A789/A789M generally covers austenitic stainless steels and applications under general service conditions, while ASTM A790/A790M covers duplex stainless steels and more severe service environments and requirements. The choice of which standard to use depends on the specific project's needs, including required pipe material properties, working environment conditions, and budget, among other factors. You can contact us directly to answer your questions.

Product Description

Factory Workshop & Production Lines

The ASTM A789 UNS S31803 tubing refers to seamless and welded tubing manufactured in accordance with ASTM A789/ASTM A1789M, which contains approximately 50% ferrite and 50% austenite. The stress corrosion resistance of ASTM A789 in neutral chloride solution and H2S is better than that of 304L, 316L austenitic stainless steel, and 18-5mo type duplex stainless steel. The UNS S31803 tubing is especially suitable for the temperature range of -50°F/+600°F. It may also be considered for applications beyond this temperature range, but there are some limitations, especially when applied to weld structures.
Company Introduction

Zhejiang Zhongzheng stainless steel Co., Ltd. is located in Wenzhou City Zhejiang province, about one hour to Jiangsu, Shanghai and Hangzhou.

ZHONGZHENG is professional China Stainless Steel Pipe Manufacturer and Stainless Steel Tube Suppliers

, the company is specializing in industrial stainless steel welded tubes and special alloys tubes, with an annual production capacity of up to 7,000 tons.

The tubes are produced to conform to GB, ASTM/ASME, JIS, DIN, EN, GOST and ISO standards.

Some special requirements from clients can also be met. Due to excellent technicians, advanced production equipment, satisfactory inspection and testing equipment and perfect quality assurance system,

Company Profile

Zhongzheng Stainless Steel Co., Ltd.

Zhongzheng Stainless Steel Co., Ltd. is a China-based manufacturer specializing in R&D, production, and distribution of stainless steel products. Established in the early 2000s, it serves industries including construction, machinery, food/medical equipment, and energy with precision tubes, sheets, profiles, and custom components.

Contact Us

Zhongzheng Stainless Steel Co., Ltd.: Contact nameLaijing Bu
Chat Now; AddressRoom 104-07, Building 5, Jinghu Technology Park Huanajinghu Garden, Donglihu Subdistrict Dongli District,

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Product Categories

Steel coil sheet and plate	Galvanized steel pipe	Galvanized Steel Sheet	Industrial Pipeline Series
Industrial sheets and rolls	Industrial Valve Series	Industrial Accessories Series	Sanitary valve series
Hygienic grade piping series	Hygienic grade accessory series	Sanitary grade panels and rolls	Special Materials
Galvanized steel	Sanitary Pipeline Series	Titanium and titanium alloy steel	Copper Tubing
Copper Plate

ASTM A789/A789m Uns S31803 Duplex Steel Pipe Seamless Tubes ASTM A790/A790

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