TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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GB/T5312 Carbon And Carbon-Manganese Seamless Steel Tubes For Ship
Steel Grade/Steel Material:10#20#45#16Mn A106 Gr A,B,A53 Gr B,ASTM A179,A315B,A335 P11,A335 P22, 12CrMo 15CrMo 20CrMo 42CrMo 12Cr1Mov 10CrMo 910A 355P 22 STF A25
Steel pipe standard:
1. ASTM:ASTM A106GR.A; ASTM A106GR.B; ASTM A53GR.A; ASTM A53GR.B;
ASTM A333; ASTM A334; ASTM A192; ASTM A210;
2. JIS: G3452;G3457; G3454; G3456; G3461; G3454; G3455;
STPG38; STPG38; STS38; STPT42; STB42; STS42; STS49; STPT49
3. DIN:ST33;ST38ST35;ST42;ST45;ST52.4;ST52; TT St35N;10Ni14;15Mo3
size:
OD:10—70mm
WT:1.00—30mm
Length: 5.8m, 6m,9m,or as required.
Production Processs:
RAW MATERIAL
↓
INCOMING INSPECTION
↓
STORAGE → CUTTING→HAMMERING → PICKING LUBRICATION → CLEANING → PHOSPHORI CLEAN
↓
ENDS CUTTING←STRAIGHTENING←HEAT TREATMENT↔MIDDLLE CHECK↔ COLD DRAWING ← LUBRICATING
↓
FINAL INSPECTION→BUNDING→STORAGE
Technique:
1) Hot Rolled
2) Cold Drawn
3) Cold Rolled
Characteristic:
Good concentricity
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
TORICH QUALITY ASSURANCE
Outside diameter and wall thickness allow deviation mm
| sort code | Manufacturing | Steel tube size | Allowable deviation | |
WHR | Hot rolled(extruded)steel tube | OD | all | ±1%Dor±0.50(choose the bigger) |
| WT | ≤20 | -15% +0.45 | ||
| ＞20 | ±10%S | |||
| WHE | Heat expand steel tube | OD | all | ±1%D |
| WT | all | ±15%S | ||
WCD | Cold drawn(rolled) steel tube | OD | ≤30 | ±0.20 |
| 30＜D≤50 | ±0.30 | |||
| ＞50 | ±0.8%D | |||
| WT | 1.5≤S≤3 | +12.5% | ||
| ＞3 | ±10%S | |||
Bending of steel tube per meter
| OD/mm | Bending per meter(mm/m) |
| ≤15 | ≤1.5 |
| ＞15~30 | ≤2.0 |
| ＞30 or D≥351 | ≤3.0 |
Application:
structral pipe;oil or gas transportation; fluid pipe;. line pipe;drill pipe;6. boiler pipe