Semi Trailer Galvanized 38mm Bolt Tighten Type Twistlocks

·Screw type
·Screwdown nut for tigher securing.
·Distinct indexing of locked and unlocked positions.
·Simply fitted to vehicle/chassis, usually by welding.
·Cast steel body and forged steel stem to ensure rugged strength and durability.
· Securing head retracts below deck level.
·Finish: Self color or black oxide primer or zinc plating
·Pin length:120-240mm

Within 30 days(Order quantity is between 1000pcs and 3000pcs)

The inspection is mainly consisted of 4 steps, including raw material inspection, routing inspection, finished product batch test, and ex-factory inspection.

Raw material inspection
Inspecting the incoming material quality is the primary step of QC. The purpose is to eliminate quality problems from the essential period.

Routing inspection
Professional quality inspectors conduct regular inspections to check the production site, even to prevent quality problems in the production process.

Finished product batch test
In order to ensure that the qualified rate of finished products reaches more than 99.8%, batch inspection and testing are carried out on the finished products.

Ex-factory inspection
Qualified products that have passed the batch inspection will undergo final inspection before they leave the factory for packing to prevent product defects.