ASTM GB DIN Coiled Stainless Steel Hydraulic Tubing For Industrial Air Conditioning
| Standard | ASTM, GB, JIS, DIN, EN, AISI |
| Matrial | TP304 TP304L TP316 TP316L TP321 TP310 TP409 TP409L TP444 S44660 Duplex 2205 |
| Size | OD: 6mm-53mm WT: 0.3mm-3mm Length: According to Customer's Requirement |
| Surface Finish | inner and outer polished; bright annealing, 180G, 320G Satin/Hairline; 400G, 600G Mirror finish pickling |
| Test and Inspection | Squash test, Extended test, Water pressure test, Crystal rot test, Heat treatment, NDT, eddy current test, air leak test, |
| Application | Industrial air conditioning, heater,evaporator, condenser, Construction, Pharmacy, Power, Petrochemical, car exhaust pipes, underfloor heating pipe, water pipe, oil pipe, gas pipe |
Tolerance
a) Outer Diameter: +/- 0.2mm
b) Thickness: +/- 0.02mm
c) Length: +/- 5mm
Production 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
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