ASTM A335 P91 Alloy Steel Seamless Pipes Using for Oil & Gas Pipeline

• Customization: Available
• Type: Pickling and Annealing
• Technique: Cold Rolled
• Model NO.: OD: 50.8 to 860 mm, thickness: 2.77 to 100mm
• Material: Alloy Steel
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Special Purpose
• Section Shape: Round
• Transport Package: Plywood Case, Knitting Strips
• Specification: OD: 50.8 to 860 mm, thickness: 2.77 to 100mm
• Trademark: XTD
• Origin: China
• HS Code: 7304119000
• Production Capacity: 15000 Tons/Year

Product Description

Product Description

 

ASTM A335 /A335M ASME SA335 pipes shall be made by the seamless process and shall be either hot-finished or cold drawn with the finishing treatment.

ASTM A335 /A335M covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high-temperature service.

Referenced Documents

ASTM A 999/A999M specification for general requirements for alloy and stainless-steel pipe
E92 Test method for Vickers hardness of metallic materials
E213 practice for ultrasonic testing of metal pipe and tubing
E309 practice for Eddy-Current examination of steel tubular products using magnetic saturation
E381 method of macro etch testing steel bars, billets, blooms, and forgings

Chemical Composition

Grade

C

Mn

P

S

Si

Cr

Mo

V

Nb

N

Al

others

P11

0.05-0.15

0.30-0.60

≤0.025

≤0.025

0.50-1.00

1.0-1.50

0.44-0.65

/

/

/

/

/

P12

0.05-0.15

0.30-0.61

≤0.025

≤0.025

≤0.50

0.80-1.25

0.45-0.65

/

/

/

/

/

P22

0.05-0.15

0.30-0.60

≤0.025

≤0.025

≤0.50

1.90-2.60

0.87-1.13

/

/

/

/

/

P91

0.08-0.12

0.30-0.60

≤0.020

≤0.010

0.20-0.50

8.0-9.50

0.85-1.05

0.18-0.25

0.030-0.070

≤0.40

≤0.02

Cb 0.06-0.10 Ti 0.01max Zr 0.01max

Chemical Composition
Heat Treatment Requirements

Grade	P11	P12	P22	P91
UNS Number	K11597	K11562	K21590	K91560
Heat Treat Type	full or isothermal anneal normalize and temper	full or isothermal anneal normalize and temper subcritical anneal	full or isothermal anneal normalize and temper	normalize and temper quench and temper
Austenitizing/ Solutioning Temperature, min or range °F [°C]	…	…	…	1900-1975[1040-1080] 1900-1975[1040-1080]
Subcritical Annealing or Tempering Temperature, Min or range °F [°C]	1200 [650]	1200 [650] 1200-1300 [650 to 705]	1250 [675]	1350-1470[730-800] 1350-1470[730-800]

Tensile Requirements and Hardness

Grade	Tensile	Yield	Elongation	Hardness
	Strength (Mpa)	Strength (Mpa)	(%)
P11 P12	≥415	≥220	≥30	≤89HRB
P22	≥415	≥200	≥30	≤89HRB
P91	≥585	≥415	≥20	91HRB-25HRC

 

FAQ

Are you a factory or a trading company?

We are a company with two mill and one warehouse,produce Stainless Steel/(Super)Duplex Steel/ Nickel Alloy seamless tube&pipes.
But we also can provide welded stainless steel pipes and pipe fittings, coils, sheets, bar, plates etc. if you need. Because we know this market well

Do you have any certificate?

We have approvals of ISO9001:2015,ISO14001:2015,ISO45001:2018, BV Ocean& Offshore Ship Classification Societies, GOST, TUV, PED AD2000 etc.
And will get ABS/NORSOK/DNV/CU-TR(EAC) soon.

What is your delivery time?

It mainly depends on your demanded volume and material grade. The time of delivery is usually around0.5- 1 month(1*40HT as usual).
We can send it out in 5 days if it has stock.

What is your payment terms?

Our usual payment term is 30% deposit and the rest against B/L. L/C is also acceptable. And the shipping terms are EXW,FOB, CFR,CIF.Whichever you like.

How can you guarantee the quality of my goods?

All material are 100% PMI tested and measured before shipping. We also accept third part inspection andEN10204.3.1B Mill test certificate for all materials.

How do you make our business long-term and good relationship?

1.We keep good quality and competitive price to ensure our customers benefit.
2. We respect every customer and we sincerely do business with them, sustain our service level before and after every deal.