2021DIN 86128-2:2021 Pipe couplings - Part 2: Pipe materials, dimensions and tests for pipe couplings for connecting pipes and fittings made of metal
2015DIN 86128-2:2015 Pipe couplings - Part 2: Dimensions of pipe couplings intended for connecting pipes and fittings made of metal
1970DIN 86128-2 E:2014-06 Pipe couplings - Part 2: Pipe materials, dimensions and tests for pipe couplings for connecting pipes and fittings made of metal