NEW-ERA STEEL TUBE TECHNOLOGY CO.,LTD
NEW-ERA STEEL TUBE HOLDING NINGBO PIPEWAY TRADE CO.,LTD
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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 or Cold Rolling, On line inspection
5. Heat Treatment
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.
| Product Name | ASTM A210 Seamless Medium Carbon Steel Boiler Tube for Superheaters |
| Material | A-1, C |
| Delivery Condition | Heat Treatment |
| Standard | ASTM A210 |
| Application | Heat Exchanger, Condensers and similar heat transfer apparatus |
| Certificate | ISO 9001 |
| HS code | 7304319000 |
| Delivery Time | 45 days |
| Packing | Bundles or Wooden Boxes |
| Steel Grade and Chemical Compositions: | |||||
| Grade | C | Mn | P | S | Si |
| A-1 | ≤0.27 | ≤0.93 | ≤0.035 | ≤0.035 | ≥0.10 |
| C | ≤0.35 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥0.10 |
Mechanical Property:
| Grade | Yield Point Mpa(ksi) | Tensile Strength Mpa(ksi) | Elongation |
| A-1 | ≥255(37) | ≥415(60) | ≥30% |
| C | ≥275(40) | ≥485(70) | ≥30% |
| Tolerance for OD and WT(SA-450/SA-450M) | |||||
| OD in(mm) | + | - | WT in(mm) | + | - |
| ＜1''(25.4) | 0.10 | 0.10 | ≤1.1/2''(38.1) | 20% | 0 |
| 1''～1.1''(25.4～38.1) | 0.15 | 0.15 | ＞1.1/2''(38.2) | 22% | 0 |
| ＞1.1/2''～＜2''(38.1～50.8 | 0.20 | 0.20 | |||
| 2''～＜2.1/2''(50.8～63.5) | 0.25 | 0.25 | |||
| 2.1/2''～＜3''(63.5～76.2) | 0.30 | 0.30 | |||
| 3''～＜4''(76.2～101.6) | 0.38 | 0.38 | |||
| 4''～＜7.1/2''(101.6～190.5) | 0.38 | 0.64 | |||
| ＞7.1/2～9''(190.5～228.6) | 0.38 | 1.14 | |||
