Pipes made of Strength Grade D steel, with a nominal diameter of 245 mm, wall thickness of 10 mm, and couplings for them:
245-D GOST 632-80 – for couplingsfor such pipes;
U-245 10-D GOSt 632-80 – pipes with a long triangular thread;
U-245-D GOST 632-80 – couplings for such pipes;
OTTM-24510-D GOST 632-80 – trapezoidal thread pipes;
OTTM-245-D GOST 632-80 – normal couplings for such pipes;
-245-D-S GOST 632-80 – special couplings (with small outside diameter) for such pipes;
OTTG-24510-D GOST 632-80 – supertight joint pipes;
OTTG-245-D GOST 632-80 – normal couplings for such pipes;
OTTG-245-D-S GOST 632-80 – special couplings (with small outside diameter) for such pipes.
Strength Grade D flush-joint slip-joint pipes, with a nominal diameter of 168 mm and wall thickness of 9 mm: