|
Tianjin City Juxing Weiye Steel Trade Co., Ltd
|
API 7-1 Oil Casing Pipe / Heavy Weight HWDP Drill Pipe For Petroleum
| Place of Origin: | Tianjin, China (Mainland) |
|
|
| Add to My Favorites | |
| HiSupplier Escrow |
Product Detail
API 7-1 Oil Casing Pipe / Heavy Weight Drill Pipe For Petroleum
<span style
API 7-1 Oil Casing Pipe / Heavy Weight Drill Pipe For Petroleum
Specifications:
|
Items |
API 7-1 standard HWDP heavy weight drill pipe |
|
O.D. tolerances of Pipe Body mm |
D<60.3: -0.8~+0.4mm 60.3≤D≤168.3: ≤±0.75% 168.3<D≤610: ≤±0.75% or ≤±3.2mm, use minimum value 610<D≤1422: ≤±0.5% or ≤±4.0mm, use minimum value D>1422: as per agreement between purchaser and manufacturer |
|
O.D. tolerances of Pipe ends mm |
D≤168.3: -0.4~+1.6mm 168.3<D≤610: ≤±0.5% or ≤±1.6mm, use minimum value 610<D≤1422: ≤±1.6mm D>1422: as per agreement between purchaser and manufacturer |
|
Tolerances of Wall Thickness mm |
T≤5.0: ≤±0.5 5.0<T<15.0: ≤±0.1T T≥15.0: ≤±1.5 |
|
Tolerances of Weight |
Single length: -3.5%~+10% ≥18t Carload weights or order weights: ≤-17.5% |
|
Straightness mm |
Straightness in full length≤0.2%, ≤4.0mm within 1000mm length at each end of steel pipe |
|
Pipe ends |
D≤3.2, plain ends. D>3.2, Bevel angle: 30°~35° Root face: ≤1.6mm±0.8mm Square cut: ≤1.6mm |
|
Hydrostatic Pressure Test |
Each length of welded steel pipes shall be hydrostatically tested. D≤457mm, Time holding test pressure≥5 seconds D>457mm, Time holding test pressure≥10 seconds |
|
Non-destructive Inspection |
The full length (100%) of welded seam of steel pipe shall be ultrasonically inspected online. After each length of welded pipes is hydrostatically tested, the ultimate 200mm length of welded seam at both ends of each pipe shall be inspected by manual ultrasonic method. |
|
Heat Treatment |
Analog normalizing heat treatment for the welded beams shall be conducted online. |
Mechenical property of drill pipe:
