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Duplex Steel Pipes

Schedule:SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80,SCH120,SCH140, SCH160, XXS
Standard:ASME/ANSI B16.11, MSS-SP-97, MSS-SP-79, JIS B2316, BS 3799
Pipe Size:1/8″NB to 24″NB & 1/4″OD TO 24″OD AND 6.35mm to 254mm OD Thickness: 0.6mm to 20mm

Classification :

Stainless Steel Pipe

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Specification

◎Specifications

Super Duplex Steel Pipe	Specifications
Pipe Types	Seamless Pipe, ERW Pipe, Welded Pipe, Fabricated Pipe, LSAW Pipe, Box Pipe.
Schedule	SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120,SCH140, SCH160, XXS
Standard	ASME/ANSI B16.11, MSS-SP-97, MSS-SP-79, JIS B2316, BS 3799
Pipe Size	1/8″NB to 24″NB & 1/4″OD TO 24″OD AND 6.35mm to 254mm OD Thickness: 0.6mm to 20mm
Grades
Super Duplex Steel	ASTM/ASME A/SA 789, 790 – UNS NO S 31803, S 32205, S 32550, S 32750, S 32760.

Chemical composition

◎Chemical Composition for Duplex Stainless Steel Pipe(%)

	C	Mn	P	S	Si	Cr	Ni	Mo	N	Cu
UNS S32101	0.03max	2.0max	0.03max	0.03max	1.0max	20.0~23.0	1.0~3.0	0.6max	0.05~0.17	1.0max
UNS S31803	0.03max	2.0max	0.03max	0.02max	1.0max	21.0~23.0	4.5~6.5	2.5~3.5	0.08~0.20	/
UNS S32205	0.03max	2.0max	0.03max	0.02max	1.0max	22.0~23.0	4.5~6.5	3.0~3.5	0.14～0.20	/
UNS S32750	0.03max	1.2max	0.035max	0.02max	0.8max	24.0~26.0	6.0~8.0	3.0~5.0	0.24~0.32	0.5max

◎Duplex steel Pipe & Tube Mechanical Properties

Mechanical properties	Tensile,min,ksi[MPa]	Yield,min,ksi[MPa]	Elongation,%(min)	Hardness,HB(max)
S31803	90 [620]	65 [450]	25	290
S32205	95 [655]	65 [450]	25	290
S32750	116 [800]	80 [550]	15	300
S32760	109 [750]	80 [550]	25	300

Duplex Stainless steel pipes are manufactured according to the ASME B36.19 standard.
DUPLEX PIPE：S31803 Pipe, S32205 Pipe
SUPER DUPLEX PIPES:S32750 Pipe, S32760 Pipe
Duplex pipes and Super Duplex pipes match the following fittings materials: ASTM A815 (butt weld fittings) and ASTM A182 F51 / F53 / F55 / F60 (flanges / forged socket weld and threaded fittings).