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[China]
Trade Verify
Address: Suite 1004, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
Contact name:Richard SHEN
TORICH INTERNATIONAL LIMITED |
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Verified Suppliers
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Key Word | Seamless Gas Cylinder Tube |
Material | 30CrMoE, 42CrMoE, 4130X, 4142 |
Size | OD: 80-1200mm WT: 4-100mm Length: 2000-9000mm |
Surface | With Anti Rust Protection |
Production Method | Cold Drawn |
Application | Gas Cylinder with 300L-3000L Volume |
Delivery Conditions | Steel pipe in hot rolling(enlarge) state,cold drawn or cold drawn
after heat treatment state delivery. |
Tolerance
According to the following tables, or according to 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 Property
Steel Grade | Tensile Strength | Lower Yeild Strength or specified plasticity elongation | Percentage Elongation after fracture | Yeild ratio | Hardness HBW | -40℃ Shock absorption energy KV2/J | |
Ra/MPa | ReL or Rp0.2a/MPa | A50mma/% | (ReL/Ra or Rp0.2/Ra)/% | 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 | |||||||
Product Show
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.
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and
solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is
30-60 days if the goods are not in stock, it is according to
quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it
free or extra ?
A: Yes, we could offer the sample for free charge but need pay the
cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30%
T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us
TORICH GB/T 28884 30CrMoE 300L - 3000L Seamless Steel Tubes for Large Volume Gas Cylinder
