1. Standards: API 5L PSL1&PSL2 2.Steel Grade: Grade B, X42, X46, X52, X60, X65, X70, X80 ... .0151.Products: Line Pipe 2. Standards: API 5L PSL1&PSL23. Steel Grade: Grade B, X42, X46, X52, X60, X65, X70, X804 ... . Protection: supply varnish coating, bevel end, plastic cap12. Application Range: for conveying petroleum, and gas, water, oil in natural gas industry ...