The material of the steel bar connecting sleeve is,

The standard straight thread connecting sleeve of steel bar is made of international No.45 high-quality carbon steel, and the production process consists of eight processes (blanking, drilling, chamfering, excircle peeling, tapping, rust prevention, sampling inspection, packaging and warehousing).

At present, many small factories use cold-drawn seamless steel pipes, and some specifications of casing tension detection can not meet the requirements of technical regulations. Please confirm before buying. Ensure the engineering quality.

I'm in Langfang, Hebei Province, and now the price of No.45 raw material is around 4,500 yuan per ton.