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GB/T 3639 TORICH Round Anti Rust Seamless Steel Pipes For Precision Applications

Basic Information
Place of Origin: Zhejiang China
Brand Name: TORICH
Certification: ISO 9001 ISO 14001 TS 16949
Model Number: GB 28884
Minimum Order Quantity: 5 Ton
Price: negotiable
Packaging Details: Packing in wooden box,hexagonal bundles or other seaworthy ways.
Delivery Time: 40 days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 50000 Ton/Year
Detail Information
Product Name:: TORICH GB 28884 300L - 3000L Seamless Steel Tubes For Large Volume Gas Cylinder Material:: 30CrMoE 42CrMoE 4130X 4142
Surface:: With Anti Rust Protection Application:: For Precision Applications
Shape:: Round OD:: 80-1200mm
WT:: 4-100m Length:: 4-12m
High Light:

seamless steel pipe

,

seamless carbon steel tube


Product Description

TORICH GB 28884 300L - 3000L Seamless Steel Tubes for Large Volume Gas Cylinder

Material:30CrMoE 42CrMoE 4130X 4142

Size Range:OD:80-1200mm

WT:4-100mm

General Length:4-12m

 

Tolerance:

According to the following tables or customers’ request.

 

Category Size Tolerance
Outside Diameter(D) - ±1%D
Minimum Wall Thickness(Smin) D≤559

+25%Smin

0

D>559

+27.5%Smin

0

Wall Thickness(S) D≤559

+12.5%S

-10%S

D>559 ±12.5%S

 

Mechanical Properties:

 

Steel Tensile Strength Lower yield strength or specified plasticity elongation percentage elongation after fracture Yield ratio Hardness -40℃ Shock absorption energy
Grade         HBW KV2/
  Ra / ReL or Rp0.2a / A50mma/ (ReL/Ra orRp0.2/Ra)/%   J
  MPa MPa %     Average Single Sample
30CrMoEb ≥720 ≥485 ≥20 ≤86 ≤269 ≥40 ≥32
42CrMoEc ≥930 ≥760 ≥16 - ≤330 ≥40 ≥32
Grade 30CrMoE mechanical property is equivanlent to 4130X
Grade 42CrMoE mechanical property is equivanlent to 4142

 

Chemical Compositions:

 

Steel

Grade

Tensile Strength

Ra /

MPa

Lower yield strength or specified plasticity elongation

ReL or Rp0.2a /

MPa

percentage elongation after fracture

A50mma/

%

yield ratio

(ReL/Ra or Rp0.2/Ra)/

%

Hardness

HBW

-10℃Shock absorption energy KV2/

J

Average Single Sample
30CrMoEb 720 485 20 86 269 40 32
42CrMoEc 930 760 16 - 330 40 32

 

Characteristic:

TORICH QUALITY ASSURANCE

Good surface quality

Good OD and ID tolerance controlled to Technical Standard
Stable quality
100% Eddy Current Test

 

Processing:

 

Technical Delivery Conditions:Steel pipe in hot rolling(enlarge) state,cold drawn or cold drawn after heat treatment state delivery.

 

Widely used in the field of:Manufacturing gas cylinder with 300L~3000L volume

 

Product Images:

GB/T 3639 TORICH Round Anti Rust Seamless Steel Pipes For Precision Applications 0300L~3000L Seamless Steel Tubes for Large Volume Gas Cylinder GB 28884GB/T 3639 TORICH Round Anti Rust Seamless Steel Pipes For Precision Applications 2

QUALITY CONTROL

1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8~ Packing and Stocking.

 

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.

Contact Details
Mike Lee

Phone Number : +8618958207750

WhatsApp : +8613736164628