Even in the place of inflammable and explosive in stroke, friction, the impact is not produced sparks.

Place of Origin: Hebei China (Mainland)	Brand Name: An Fang	Model Number: 2018
Type: CONSTRUCTION BOX WRENCH	Material: Alloy	Size: 17-155mm
Type: non sparking bent box wrench	color: Nature or green	Mertiral: Be-Cu or Al-Cu

CONSTRUCTION BOX WRENCH

 

1. The material: 45# steel, 40Cr.

2. Forging way:

  1) smith forging

  2) Solid and whole forging

3. The processing procedure

  1) To prepare the raw material, blanking

  2) Forging

  3) Stored in the semi finished products warehouse

  4) Punching

  5) Through the drawbench or slotting machine

  6) PE plain end and chamfering

  7) Gas cutting rough selvedge

  8) Polishing

  9) Drill hole

  10)Perfect the product and marking

  11)Surface treatment

4. Surface treatment

  1)Electrostatic spraying

  2) Natural color

  3) Alkali coloring, barffing

  4)Zinc galvanization

  5)Chromate treatment

CONSTRUCTION BOX WRENCH,non-sparking .constrution box wrench