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Chinese Manufacturer Cheap Oilfield Casing Pipe Steel Pipe
High-frequency straight-seam resistance welding (ERW), the hot rolled coil formed by the molding machine, makes use of the skin effect and proximity effect of the high-frequency current to melt the heated edge of the tube blank, and is welded to the product under the action of the extrusion roll.
Features:
High-frequency straight-seam resistance welding (ERW), the hot rolled coil formed by the molding machine, makes use of the skin effect and proximity effect of the high-frequency current to melt the heated edge of the tube blank, and is welded to the product under the action of the extrusion roll.
1) High dimensional accuracy
The deviation of outer diameter and wall thickness is small
2) Good toughness
Because of the high strength and toughness, the carbon, sulfur and phosphorus content is low during welding, and the impact toughness is greatly improved.
3) Ratio of collapse anti-explosion performance
API seamless casing explosion-resistant strength increases by 30% ~ 40%, explosion-resistant performance increases by 50%.
4) The ERW casing adopts hot rolled coil plate, with fine grain and high density, which is better than seamless tube
High-frequency straight-seam resistance welding (ERW), the hot rolled coil formed by the molding machine, makes use of the skin effect and proximity effect of the high-frequency current to melt the heated edge of the tube blank, and is welded to the product under the action of the extrusion roll.
Features:
High-frequency straight-seam resistance welding (ERW), the hot rolled coil formed by the molding machine, makes use of the skin effect and proximity effect of the high-frequency current to melt the heated edge of the tube blank, and is welded to the product under the action of the extrusion roll.
1) High dimensional accuracy
The deviation of outer diameter and wall thickness is small
2) Good toughness
Because of the high strength and toughness, the carbon, sulfur and phosphorus content is low during welding, and the impact toughness is greatly improved.
3) Ratio of collapse anti-explosion performance
API seamless casing explosion-resistant strength increases by 30% ~ 40%, explosion-resistant performance increases by 50%.
4) The ERW casing adopts hot rolled coil plate, with fine grain and high density, which is better than seamless tube
Packaging
After Sales Warranty
High-frequency straight-seam resistance welding (ERW), the hot rolled coil formed by the molding machine, makes use of the skin effect and proximity effect of the high-frequency current to melt the heated edge of the tube blank, and is welded to the product under the action of the extrusion roll.
Features:
High-frequency straight-seam resistance welding (ERW), the hot rolled coil formed by the molding machine, makes use of the skin effect and proximity effect of the high-frequency current to melt the heated edge of the tube blank, and is welded to the product under the action of the extrusion roll.
1) High dimensional accuracy
The deviation of outer diameter and wall thickness is small
2) Good toughness
Because of the high strength and toughness, the carbon, sulfur and phosphorus content is low during welding, and the impact toughness is greatly improved.
3) Ratio of collapse anti-explosion performance
API seamless casing explosion-resistant strength increases by 30% ~ 40%, explosion-resistant performance increases by 50%.
4) The ERW casing adopts hot rolled coil plate, with fine grain and high density, which is better than seamless tube
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