Name: ASTM A815 S31803 Duplex Steel Fitting Buttwelded Elbow for Pipeline
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A815 S31803
Price: 100000.00 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

English

Home

Products

About Us

Factory Tour

Quality Control

Company News

Home Products Steel Fitting

ASTM A815 S31803 Duplex Steel Fitting Buttwelded Elbow for Pipeline

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM A815 S31803

Payment & Shipping Terms:

Minimum Order Quantity:	100KGS
Price:	Negotiable
Packaging Details:	Ply-wooden Case
Delivery Time:	7DAYS
Payment Terms:	L/C,T/T

Contact Now

All Products

Stainless Steel Seamless Pipe (290)

Stainless Steel Seamless Tube (277)

Duplex Stainless Steel Pipe (127)

Duplex Stainless Steel Tube (29)

Needle Tube (107)

Fin Tube (631)

Heat Exchanger (17)

Heat Exchanger Tube (424)

Heat Exchanger Tube Bundle (37)

Heat Exchanger Tubesheet (116)

Heat Exchanger Baffle (36)

Air Cooler (8)

Pressure Vessel (4)

Stainless Steel Welded Pipe (57)

Stainless Steel Welded Tube (114)

Nickel Alloy Pipe (261)

Nickel Alloy Tube (79)

Copper Alloy Tube (227)

Alloy Steel Tube (184)

Titanium Tube (10)

Bright Annealed Tube (153)

Boiler Tube (145)

Steel Fitting (804)

Steel Flange (590)

Others (391)

Cladding Parts (7)

Detailed Product Description

Standard:	ASTM A815	Material:	S31803
NDT:	PT/UT	Size:	CustomizeSize, 1/8"-2", 1/2"-48", 1/2"-6", DN15-DN1200
Thickness:	STD, DIN, SCH40, SGP, SCH10-XXS(2-60mm)	Application:	Gas And Oil Pipes, Petroleum Gas, Joining Pipe Lines
Highlight:	B16.9 Elbow Pipe Fitting , S31803 Duplex Steel Elbow

ASTM A815 S31803 Duplex Steel Fitting Buttwelded 90Deg Elbow for Pipeline

ASTM A815 Standard for Malleable Ferritic, Ferritic Austenitic, and Martensitic Stainless Steel Pipe fittings. S31803 belongs to duplex stainless steel. 22% chromium duplex (austenitic/ferritic) steel (2205 type), with moderate to high strength and good resistance to common corrosion/stress, corrosion/cracking.

In today's market, UNS S32205 is generally considered an upgraded and more commonly used grade of S31803. Their chemical compositions are very similar. S32205, by increasing the lower limit of nitrogen content, ensures sufficient austenite phase reformation in the weld heat-affected zone, thus guaranteeing the toughness and corrosion resistance of the weld joint. Therefore, S32205 is the preferred grade for modern 2205 duplex steel.

ASTM A815 S31803 Duplex Stainless Steel Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Ni	Mo	Fe	Other
S31803	≤0.03	≤2	≤1	≤0.03	≤0.02	21~23	4.5~6.5	2.5~3.5	margin	N 0.08~0.2

ASTM A815 S31803 Duplex Stainless Steel Minimum Mechanical Performance Value

Grade

Tensile strength

(Rm N/mm²)

Yield strength

(RP 0.2N/mm²)

Elongation rate

(A5%)

Brinell hardness

(HB)

S31803

620

450

290

ASTM A815 S31803 Duplex Stainless Steel Fitting Main Application

Oil and Gas Industry: Offshore platform process pipelines, subsea pipelines, gathering and transmission pipelines, desalination units, etc. Resistant to chloride corrosion in seawater and formation water.
Chemical and Petrochemical Processing: Containers, heat exchangers, and piping systems handling chloride-containing media.
Oil and Gas Refining: Areas in atmospheric and vacuum distillation units and catalytic cracking units that come into contact with sulfur- and salt-containing media.
Pulp and Paper Industry: Pulping and bleaching sections.
Energy and Environmental Protection: Flue gas desulfurization systems, wastewater treatment systems.
High-Strength Structural Components: Utilizing its high strength, used in corrosion-resistant structures such as bridges and ships where weight reduction is required.