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variable screw

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Description

Whatever the standards, ASTM, DIN, BSW, GB, JIS, UIC, Russian or drawings from customers.
Materail: Carbon steel or stainless steel, Q195, Q235, 35#, 45#, 35CrMo, 42CrMo, 40Cr etc.
Protection: plain (oiled), hot dip galvanized, white zink plated, yellow zink plated, black, dacromet, geomet or others specified by the customers
Product Name: coach screw/Wooden sleeper screw/Drive screw/ screw spike/Dog spike
Product Standard: DIN571or other standard or drawing required by clients.
Specification: Normal
Grade: high strength

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