Low-Temperature Seamless Pipe

Low-Temperature Seamless Pipe

Low-Temperature Service Alloy Steel Pipe A333 Brief Introduction. Low-Temperature Service Alloy Steel Pipe according to standard ASTM A333. Pipe grades permit low temperature service. This specification covers nominal (average) walled pipe almost exclusively in seamless. Several grades of...

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Product Details

Low-Temperature Service Alloy Steel Pipe


Brief Introduction

Low-Temperature Service Alloy Steel Pipe is based on standard ASTM A333. Pipe grades permit low temperature service. This specification covers nominal (average) walled pipe almost exclusively in seamless. Several grades of ferritic steel are included. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse effect on low-temperature impact properties.

ASTM A333 GR.6.jpg

 

Specificaton

Standard

ASTM A333

Steel Grade

16MnDG, 10MnDGM, 09DG, 09Mn2VDG, 06Ni3MoDG, ASTM A333-Grade1, Grade3, Grade4, Grade6, Grade7, Grade8, Grade9, Grade10, Grade11

Size Range

OD:1/2" to 24"; W.T.:4mm to 70mm; Length:6m to 12m 

Certificate

The products are supplied with 3.1 specific test certificates, according to EN 10204. Certification according to 3.2 can be agreed at the time of ordering.

Key Words

Alloy Steel - Carbon Steel - Low-Temperature Services - Notch Toughness - Seamless Pipes and Tubes - Seamless Steel Pipes - Welded Pipes and Tubes - Welded Steel Pipes

 

ASTM A333 GR.6.jpg


Description

Low-Temperature Service Alloy Steel Pipe used in cryogenic alloy tubes is comparable to that of carbon structural steels. The utility model has the advantages of high strength, good comprehensive performance, long service life, wide application range, relatively economic, etc.. It is widely used in bridges, ships, boilers, vehicles and important building.


Normal Grade Chemical Requirements 



            Composition, %


Element

Grade 1

Grade 3

Grade 6

Carbon, max

0.30

0.19

0.30

Manganese

0.40 – 1.06

0.31 – 0.64

0.29 – 1.06

Phosphorous, max

0.025

0.025

0.025

Sulfur, max

0.025

0.025

0.025

Silicon

0.18 -0.37

0.10 min

Nickel

3.18 – 3.82



Normal Steel grade:

ASTM A333 Grade 6


Packing:

Bare packing / bundle packing / crate packing / wooden protection at the both sides of tubes and suitably protected for sea-worthy 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.


Chemical requirement Composition (%)

Composition ASTM A333 Grade 6

Carbon, max 0.30

Manganese 0.29–1.06

Phosphorus, max 0.025

Sulfur, max 0.025

For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese.


Tensile requirements

Data ASTM A333 Grade 6

Tensile strength, min, psi (MPa) 60 000 (415)

Yield strength, min, psi (MPa) 35 000 (240)


Impact temperature

Minimum Impact Test Temperature -45 °C(-50 F)


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.

 

Edit by Mr. Bruce Zhang of KRM/BSW

Contact us directly by:  

Email: bruce@kingruimansteelpipe.com  

Tel / Whatsapp: +86-18046588367

Skype: brucezhang166

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