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| Categories | Welded Steel Tube |
|---|---|
| Brand Name: | TORICH |
| Model Number: | GB/T 12771 |
| Certification: | ISO 9001 ISO 14001 TS 16949 |
| Place of Origin: | China |
| MOQ: | 5 Ton |
| Price: | USD 2000-3000/Ton |
| Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability: | 40000 Ton/Year |
| Delivery Time: | 30 days |
| Packaging Details: | Packing in wooden box，hexagonal bundles or other seaworthy ways. |
| Product Name: | Welded Stainless Steel Pipes for Liquid Service GB/T 12771 |
| Material: | 304/304L 316/316L |
| Surface: | Polishing |
| Application: | Liquid delivery |
| Shape: | Round |
| OD: | 4-1200mm |
| WT: | 0.3-200m |
| Length: | 2-12m |
| Company Info. |
| TORICH INTERNATIONAL LIMITED |
| Verified Supplier |
| View Contact Details |
| Product List |
Welded Stainless Steel Pipes for Liquid Service GB/T 12771
SPEC:
Material:304/304L 316/316L
Diameter : 4-1200mm
Wall thickness : 0.3-200mm
Length : 2-12m Upon customer's request
Tolerance:
According to the following tables or customers’ request.
Table 1 Tolerance of OD
| Classification | D | Permissible Tolerance | |
| A | B | ||
| H | All Dimensions | ±0.5% or ±0.20 | ±0.75% or ±0.30 |
| T | ＜40 | ±0.20 | ±0.30 |
| ≥40~＜65 | ±0.30 | ±0.40 | |
| ≥65~＜90 | ±0.40 | ±0.50 | |
| ≥90~＜168.3 | ±0.80 | ±1.00 | |
| ≥168.3~＜325 | ±0.75%D | ±1%D | |
| ≥325~＜610 | ±0.6%D | ±1%D | |
| ≥610 | ±0.6%D | ±0.7%D or ±10 | |
WC SP | ＜40 | ±0.15 | ±0.20 |
| ≥40~＜60 | ±0.20 | ±0.30 | |
| ≥60~＜100 | ±0.30 | ±0.40 | |
| ≥100~＜200 | ±0.4%D | ±0.5%D | |
| ≥200 | ±0.5%D | ±0.75%D | |
Table 2 Tolerance of WT
| Nominal WT | Permissible Tolerance |
| ≤0.5 | ±0..10 |
| ＞0.5~1.0 | ±0.15 |
| ＞1.0~2.0 | ±0.20 |
| ＞2.0~＜4.0 | ±0.30 |
| ≥4.0 | ±10%S |
Table 3 Bending degree
| Out diameter/mm | Bending degree/(mm/m) |
| ≤108 | ≤1.5 |
| ＞108~325 | ≤2.0 |
| ＞325 | ≤2.5 |
Table 4 Mechanical properties of steel tubes.
| Number | New Brand | Ola Brand | non-proportional extension strength MPa | tensile strength
MPa | elongation after fracture A/ % | |
| Heat treatment condition | Non-heat treatment condition | |||||
| Not less than | ||||||
| 1 | 12Cr18Ni9 | 1Cr18Ni9 | 210 | 520 | 32 | 25 |
| 2 | 06Cr19Ni10 | 0Cr18Ni9 | 210 | 520 | ||
| 3 | 022Cr19Ni10 | 00Cr19Ni10 | 180 | 480 | ||
| 4 | 06Cr25Ni20 | 0Cr25Ni20 | 210 | 520 | ||
| 5 | 06Cr17Ni12Mo2 | 0Cr17Ni12Mo2 | 210 | 520 | ||
| 6 | 022Cr17Ni12Mo2 | 00Cr17Ni14Mo2 | 180 | 480 | ||
| 7 | 06Cr18Ni11Ti | 0Cr18Ni10Ti | 210 | 520 | ||
| 8 | 06Cr18Ni11Nb | 0Cr18Ni11Nb | 210 | 520 | ||
| 9 | 022Cr18Ti | 00Cr17 | 180 | 360 | 20 | -- |
| 10 | 019Cr19Mo2NbTi | 00Cr18Mo2 | 240 | 410 | ||
| 11 | 06Cr13Al | 0Cr13Al | 177 | 410 | ||
| 12 | 022Cr11Ti | -- | 275 | 400 | 18 | -- |
| 13 | 022Cr12Ni | -- | 275 | 400 | 18 | -- |
| 14 | 06Cr13 | 0Cr13 | 210 | 410 | 20 | -- |
Characteristic:
Good concentricity
Good surface quality
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
TORICH QUALITY ASSURANCE
Processing:Single-sided automatic arc welding or Double-sided automatic arc welding
Technical Delivery Conditions:Heat treatment+pickling
Widely used in the field of:Liquid delivery
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