8′′~38′′ ASME SA335 P91 Seamless Steel Pipe for Power Plant

• Type: Seamless
• Technique: Hot Rolled
• Material: Alloy Steel
• Surface Treatment: Bare Pipe, Coating by Buyer′s Requirement
• Usage: Pipeline Transport, Oil/Gas Drilling, Chemical Industry, Mining, Special Purpose, Boiler Industry, Power Plant
• Section Shape: Round
• Model NO.: IR-B steel pipe
• Diameter: 219mm~508mm
• Wall Thickness: 10mm~50mm
• Length: Fixed Length, by Random
• Surface: Heat Treatment, Polishing
• End Processing: Plain Ends, Bevel Ends
• Inspection: Third Party Inspection
• Transport Package: Standard Seaworthy Packing
• Specification: ASTM A335
• Trademark: Iron&steel
• Origin: China
• HS Code: 73045910
• Production Capacity: 1000ton Per Month

Product Description

Outer diameter: 219mm~1066mm
Wall thickness: 15mm~120mm
8''~20'' Seamless Steel Pipe by P91 Steel Grade
Standard: ASME SA106, ASME SA335, ASME SA333, DIN17175, EN10216-2, GB5310, GB3087.
Steel grade: SA335 P11/P12/P22/P91/P92, WB36, 10CrMo910, 20G, 15CrMo, 12Cr1MoVG,
           SA333 I, SA333VI, ST45.8/III,etc
We provide all necessary certificates for P91 pipe, such as IBR Form III A 


Tolerance of size of our seamless alloy pipe:

Type of pipe	Outer diameter		Wall thickness
	OD (mm)	Tolerance (mm)	WT (mm)	Tolerance (mm)
Hot rolled pipe	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 SA106	SA106B	≥415	≥240	≥22	≥35	/
	SA106C	≥485	≥275	≥20	≥35	/
ASME SA333	SA333I	≥380	≥205	≥28	-45ºC≥18	/
	SA333VI	≥415	≥240	≥22	-45ºC≥18	/
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
DIN17175	ST45.8/III	410~530	≥255	≥21	≥27(DVM)	/
	15Mo3	450~600	≥270	≥22	≥34(DVM)	/
	13CrMo44	440~590	≥290	≥22	≥34(DVM)	/
	10CrMo910	480~630	≥280	≥20	≥34(DVM)	/
EN10216-2	15NiCuMoNb5-6-4 (WB36)	610~780	≥440	≥19	≥40	/

Chemical composition boiler pipe:

standard

Steel grade

Chemical composition (%)

C

Si

Mn

P

S

Cr

Mo

Cu

Ni

V

AL

W

Nb

N

ASME SA106

SA106B

0.17 ~0.25

≥0.1

0.7 ~1.0

≤0.03

≤0.03

SA106C

0.23 ~0.27

≥0.1

0.7 ~1.0

≤0.03

≤0.03

ASME SA333

SA333I

0.09 ~0.12

/

0.7 ~1.0

≤0.02

≤0.01

SA333II

0.09 ~0.12

≥0.1

0.9~ 1.1

≤0.02

≤0.01

ASME       A335

SA335P11

0.05 ~0.15

0.5 ~1.0

0.3 ~0.6

≤0.03

≤0.03

1.0 ~1.5

0.5 ~1.0

SA335P12

0.05 ~0.15

≤0.5

0.3~ 0.6

≤0.03

≤0.03

0.8 ~1.25

0.44 ~0.65

SA335P22

0.05 ~0.15

≤0.5

0.3~ 0.6

≤0.03

≤0.03

1.9 ~2.6

0.87 ~1.13

SA335P5

≤0.15

≤0.5

0.3~ 0.6

≤0.03

≤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

DIN 17175

ST45.8III

≤0.21

0.1 ~0.35

0.4 ~1.2

≤0.04

≤0.04

≤0.3

15Mo3

0.12 ~0.2

0.1 ~0.35

0.4 ~0.8

≤0.035

≤0.035

0.25 ~0.35

13CrMo44

0.1 ~0.18

0.1 ~0.35

0.4 ~0.7

≤0.035

≤0.035

0.7 ~1.1

0.45 ~0.65

10CrMo910

0.08 ~0.15

≤0.5

0.3 ~0.7

≤0.025

≤0.02

2.0 ~2.5

0.9 ~1.1

≤ 0.3

≤0.3

≤0.015

0.015 ~0.045

EN10216 -2

WB36

≤0.17

0.25 ~0.5

0.8 ~1.2

≤0.025

≤0.02

≤0.3

0.25 ~0.5

0.5 ~0.8

1.0 ~1.3

≤0.015

Further more, the plant has large-scale cold rolling machine(by 1200t, 1600t, 2000t), the maximum cold rolling diameter can be 920mm. Cold rolling technics can improve the precision of diameter and wall thickness. So we can supply high steel grade steel pipe with big diameter and thin thickness.
Our service
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