The difference between DSAW and HFW is mainly manifested in the appearance of the weld appearance, Double submerged arc welding steel pipe in appearance is with a slight indentation strip, mainly in steel interior.

Carbon Steel Buttweld Fittings are made up of steel that has 2.1% of carbon by weight at least. This percentage of carbon make these Fittings excellently weldable and formable.

AWWA C200 water steel pipe steel pipes are widely used in the following fields/industries:Hydroelectric power station, potable, Water supply industry, irrigation pressure pipeline, sewage treatment pipeline.

Galvanization is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting. The term is derived from the name of Italian scientist Luigi Galvani.

Honed tube is well known as hydraulic cylinder tube in many industries. This is because honed tubes are the most important materials of manufacturing hydraulic cylinders.

The API SPEC 5L specification provides standards for pipe suitable for use in conveying gas, water, and oil in the natural gas and oil industries.