High strength pipe pile spring bolt
Size：
Thread：
Standards：GB/DIN/ ISO/ANSI/CUSTOMIZE
Materials：40Cr
Strength: 10.9 ,12.9
Color：Black
pipe pile clamping bolts
Size：M12~M39
Thread: Half thread/ Full thread
Standards：GB/DIN/ ISO/ANSI/CUSTOMIZE
Materials：Carbon Steel/35K/45/40Cr/35Crmo
Strength：4.8 8.8 10.9 12.9
Length：15-500mm
Color：Saw/Black/YZP/ZP/HDG