Place of Origin:
ZHEJIANG, CHINA
Brand Name:
TORICH
Certification:
ISO9001, ISO14001, TS16949
Model Number:
ASTM A270
| Matrial | TP304L TP316L stainless steel | 
| Size | WT: 1.0-3.0mm OD: 6-38mm Length: as customers' requirement | 
| Delivery Condition | Bright Annealing | 
| Test | Tension Test, Flaring Test, Flange Test, Reverse Test, Hardness Test, Hydrostatic or Nondestructive Electric Test etc | 
| Application | 1. Semiconductor 2. Pharmaceuticals 3. Food & Beverage 4. Automotive Industry 5. Laboratory Gas | 
Chemical Composition
| Steel Grade | C | Si | Mn | P | S | Ni | Cr | Mo | |
| TP304L | ASTM | max 0.035 | max 1.00 | max 2.00 | max 0.045 | max 0.030 | 8.00-12.00 | 18.00-20.00 | / | 
| Typical | 0.018 | 0.34 | 1.13 | 0.028 | 0.002 | 8.31 | 18.52 | / | |
| TP316L | ASTM | max 0.035 | max 1.00 | max 2.00 | max 0.045 | max 0.045 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | 
| Typical | 0.015 | 0.30 | 0.98 | 0.031 | 0.031 | 10.43 | 16.71 | 2.08 | |
Mechanical Properties
| Steel Grade | Yield Strength (0.2%N/mm²) | Tensile Strength (N/mm²) | Elongation (%) | Vickers Hardness | ||
| TP304L | ASTM | 170 min | 485 min | 35% min | HV | HRB | 
| Typical | 278 | 605 | 58 | 146 | 80 | |
| TP316L | ASTM | 170 min | 485 min | 35% min | HV | HRB | 
| Typical | 280 | 595 | 62 | 143 | 79 | |
Tolerance
| Item | Size mm (in) | Tolerance | 
| OD (Outside Diameter) 3.175mm-25.4mm (1/8" - 1") | 3.175-12.7 (0.125-0.50) | ±0.05 (±0.002) | 
| 12.7-25.4 (0.5-1.5) | ±0.08 (±0.003) | |
| WT (Wall Thickness) 0.5mm-3.0mm (0.02" - 0.12") | 0.5-1.5 (0.02-0.059) | ±5% | 
| 1.51-3.0 (0.059-0.118) | ±8% | |
| Length | 4000-6100 (12-20ft) | -0, +3.2 (-0, +0.12) | 
| Straightness | Straight Tubing | 0.8mm/m | 
| Hardness (HRB) | Bright Annealed | 75-85 | 
Manufacturing Process
Mother Tube→End Swaging→Cold Drawn→End Cutting→UT Degreasing→Clean&Dry Oven→Bright Annealing→Straightening→Length Cutting→OD Polishing→Passivation→Purity Water Clean→Dry&PN2 Clean→Eddy Current→Clean Packing
Feature
1. High precision drawing die and highperformance drawn oil, and a state-of-art 3-line-tubes drawer to guarantee a ID Ra<0.38μm (15μin), OD tolerance ±0.05mm.


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.
 
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