SW Grating has been fabricated in strict accordance to N.A.A.M.M (National Association of Architectural Metal-Manufacturers)specification and high quality controlled by our TQC system. Sangwon Gratings are designed and manufactured in
accordance with relevant international standards. Sangwon utilizes a high quality mild steel for load bearing bars which
exceeds the specifications of ASTM A36, BS4360 Grade 43A, JIS G3101 SS400 and KSD3505 SB41. It also can be manufactured
of stainless steel, normally grades STS304 and STS316. The following is the work process:

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