ASTM A335 P91 High Pressure Semaless Boiler Pipe Alloy Seamless Steel Pipe ASTM A335 P91 Seamless Alloy Steel Pipe

Product Description

ASTM A335 P91 High Pressure Semaless Boiler Pipe Alloy Seamless Steel Pipe ASTM A335 P91 Seamless Alloy Steel Pipe

Steel grade: ASTM A335 P91

ASTM A335 P91 alloy steel pipe
Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
 

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
 

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P91 Chemical Compositions(%)

Mechanical properties for ASTM A335 P91

Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment

• A / N+T

• N+T / Q+T

• N+T

Mechanical Tests Specified

• Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test

• For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.

• For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

Notes for Bend Test:

• For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.

• Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.

• The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

Introductio

China Hebei Hong Cheng pipe fitting company is a professional enterprise that integrates pipe production, selling and exports.The company was founded in 1992. It covers an area of 0.1 million square meters.

There are 520 employees,3 of them are senior engineers,12 of them engineers and 150 of them professional technical workers.The annual production capacity is more than 20,000 tons, and the pipe turnover is more than 50,000 tons.

The company has advance production equipment, complete detection equipment and strong technology power. The leading products are steel pipe fitting accessories(elbows, bends, tees, cross tees, reducers, capping heads, flanges, hangers, socket components) series products.

FAQ

Q: How long is your delivery time ?

A: Generally it is 5-15 days if the goods are in stock. Or it is 25-60 days if the goods are not in stock, the specific delivery time depends on the items and the quantity of your order.

Q: Do you test all your goods before delivery?

A: Yes, we have 100% test and NDT before delivery.

Q: What is your terms of payment ?

A: 30% T/T in advance ,balance before shippment. 100% L/C at sight.