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Home > Products > Alloy Steel Pipes And Tubes

Best Quality Fast Delivery ASTM A335 Alloy Seamless Steel Pipe For Power Plant

We are supplying best quality fast delivery ASTM A335 alloy seamless steel pipe for power plant. The available grades are ASTM SA335 P11/P12/P22/P91/P92. Our supplying size range is 219-1066mm O.D. x 15-120mm thickness. Should any inquiries or questions, pls contact us freely.

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Best Quality Fast Delivery ASTM A335 Alloy Seamless Steel Pipe for Power Plant

We are supplying seamless alloy pipe with big diameter and wall thickness. This kind of alloy pipe are widely used at power plant, boiler industry, mechanical making, chemical plant, nuclear power industry, etc.

Standard: ASME SA335

Steel grade: SA335 P11/P12/P22/P91/P92,

Outer diameter: 219mm~1066mm
Wall thickness: 15mm~120mm

Tolerance of sizes:

Type of pipe	Outer diameter		Wall thickness
	OD (mm)	Tolerance (mm)	WT (mm)	Tolerance (mm)
Hot Rolled Steel Pipes	219~457	±1.0%	=20	-10%~+12.5%
			>20~40	-10%~+10%
	457~1066	±0.9%	>40~70	-7%~+9%
			>70~120	-6%~+8%

Mechanical Properties of boiler pipe:

Standard	Steel grade	Tensile strength(MPa)	Bend strength(Mpa)	Elongation %	Impact energy(J)	Hardness
ASME SA335	SA335 P11	=415	=205	=22	=35	=163HB
	SA335 P12	=415	=220	=22	=35	=163HB
	SA335 P22	=415	=205	=22	=35	=163HB
	SA335 P5	=415	=205	=22	=35	=187HB
	SA335 P91	585~760	=415	=20	=35	=250HB
	SA335 P92	=620	=440	=20	=35	250HB

Chemical composition boiler pipe:

standard

Steel grade

Chemical composition (%)

ASME
A335

SA335P11

0.05
~0.15

0.5
~1.0

0.3
~0.6

=0.03

1.0
~1.5

0.5
~1.0

SA335P12

0.05
~0.15

=0.5

0.3~
0.6

=0.03

0.8
~1.25

0.44
~0.65

SA335P22

0.05
~0.15

=0.5

0.3~
0.6

=0.03

1.9
~2.6

0.87
~1.13

SA335P5

=0.15

=0.5

0.3~
0.6

=0.03

4.0
~6.0

0.45
~0.65

SA335P91

0.08
~0.12

0.2
~0.5

0.3~
0.6

=0.02

=0.01

8.0
~9.5

0.85
~1.05

=0.4

0.18
~0.25

=0.015

0.06
~0.1

0.03
~0.07

SA335P92

0.07
~0.13

=0.5

0.3~
0.6

=0.02

=0.01

8.5
~9.5

0.3~
0.6

B0.001
0.006

=0.4

0.15
~0.25

=0.015

1.5
~2.0

0.04
~0.09

0.03
~0.07

Our services:
Make production according to customer's specific requirements strictly.
Accept inspection during the production or before shipment.
Provide the original copy of MTC (Mill testing certificate)
Provide the standard seaworthy packing.
Arrange the most professional shipment.

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Third Party inspection that is preferred by new customers is proved to be convincing. Through years’ of operation, M/S Ruicheng Steel has established stable contact with world famous third party inspection authorities, like Lloyd’s, BV, SGS, ABS, Intertek, ect. More than 10,000Mtons of steel pipes, tubes, fittings and flanges have been inspected by them.

Any questions or inquiries will be highly appreciated.

Kindly please contact us freely at gracewang@ruichengsteel.cn