ningbo delta hezhong fastener manufacturing co., ltd. 35 CrMo double-head studs, double-head bolts, B7 teeth strips, high temperature and high pressure bolts, HG20634（ full thread), HG20613（ full thread), GB897、GB898、GB899、GB900、GB901、GB9125（ full thread), JB4707（ equal length double heads), SH3404、DIN938、DIN939、IFI136、 non-standard photos are used to double heads. have A thick rod, B thin rod, full thread.

35CrMo double-head studs, double-head bolts, B7 teeth strips, high temperature and high pressure bolts, HG20634（ full thread), HG20613（ full thread), GB897、GB898、GB899、GB900、GB901、GB9125（ full thread), JB4707（ equal length double heads), SH3404、DIN938、DIN939、IFI136、 non-standard photos are used to double heads. have A thick rod, B thin rod, full thread.

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