ASTM A333 Gr1 low temperature steel pipe
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1.boiler tubes in Gr1 as per ASTM A333 standard.
2.Third inspection cert.
3.Mainly exported to Europe and Amercia market
Heat Treatment:
Option 1:Normalize by heating to a uniform temperature of not less than 815 cent the air or inigrade and cool in the cooling chamber of an atmosphere controlled furnance. And then, reheat to a suitable tempering temperature.
Option 2: For seamless only. Reheat and control hot working and temperature of the hot-finishing operation to a finishing temperature range from 845 centigrade to 945 centigrade and cool in air or in a controlled atmosphere furnace from an initial temperature of not less than 845 centigrade. And then, reheat to a suitable tempering temperature.
Preparation of the specimens:
1. Material from which specimens are to be taken will be heat treated prior to preparation of specimens.and will be taken from full thickness test pieces which have been stress relieved .
2. The test pieces will be gradually and uniformly heated to the prescribed temperature, held at that temperature for a period of time in accordance with following description and then furnace cooled at a temperature not exceeding 315 centigrade.
|
Metal Temperature(°C) |
Min Holding Time(min/mm) of Wall Thickness |
|
600 |
2.4 |
|
565 |
4.7 |
|
540 |
7.1 |
Chemical composition:
|
Steel Grade |
C |
Mn |
P |
S |
|
Grade 1 |
0.30 max |
0.40-1.06 |
0.025 max |
0.025 max |
Mechanical Performance:
|
Steel Grade |
Tensile strength Min |
Yield Strength Min |
Elongation in 2in.or 50mm, min,% |
Impact Requirements(10*10)(-45°C) |
||||
|
(psi) |
(Mpa) |
(psi) |
(Mpa) |
Longitudinal |
Transverse |
Min Average Notched Bar Impact Value of each set of three specimens |
Min Notched Bar Impact Value of one specimen only of a set |
|
|
Gr 1 |
55000 |
380 |
Min30000 |
205 |
35 |
25 |
18J |
14J |
Product Name:
Steel Pipes for Low Temperature Service
Low Temperature Seamless Steel Pipes
ASTM A333 Gr.1 Steel pipe
ASTM A333 Gr.3 Steel pipe
ASTM A333 Gr.6 Steel pipe
ASTM A333 Gr.1, 3, 6
ASTM A333 seamless pipe
ASTM A333 alloy pipes
2). Features:
B) Surface finish: Varnish/Paint
3). Standard and steel grades available:
ASTM A333 Gr.1, 3, 6
4) Size:
A)NPS: 1/2" to 24"
B) Schedule: 10S, 20, 30, 40/40S, 60, 80/80S, 100, 120, 140, 160, STD, XS, XXS
C) O.D.: 21.3mm to 609.6mm
D) W.T.: 2.11mm to 60mm
E) Length: Max.12meters
5) Packing: Seaworthy in bundles
6) Inspection: Third Party
Tag : low carbon steel pipe, pipe fittings stainless steel, low carbon steel grades, ASTM A333 Gr.1, 3, 6
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