Xinhang Tower Technology Co.,Ltd

Punching Patrs

The maximum carbon equivalency for structural steel is 0.55 or less as calculated per the AWS equation:

CE= C+ Mn+Si+ Cr+Mo+V+ Ni + Cu
6 5 15

Required for Weldability and Galvanizing:

CE < 0.55 C< .23 P < .03

Si:     .00   -   .03     or   .15     -  .25   for pipe , plate, flat, angle, and solid round

All Welded parts and welds conform to AWS D1.1 welding code latest revision and be performed by certified welders.  All welds are free of all porosity and pinholes.

Welding Wire meet AWSA5.18

Materials meet ASTM A36, A572 Gr50/S275JR

Gases meet AWS A5.32

A Certificate of Conformance for all welding wire and gases will be provided

All preheating will be in accordance with AWS D1.1 welding code

All material will be free from paint lacquer, varnish, and oils

All bent or formed parts will be free of cracking

All galvanized material meet ASTM-A123 galvanizing standards. Galvanizing certifications will be provided

All shapes products could be customized according to drawings

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