JB/T 1308.20-2011 PN2500 Ultra-high pressure valves and fittings - Part 20: Crossover elbows and crossover fittings with different diameters

JB/T 1308.1-2011 PN2500 Ultra-high pressure valves and fittings - Part 1: Valve types and basic parameters JB/T 1308.2-2011 PN2500 High-pressure Valves and Fittings Part 2: Valves, Fittings, and Fasteners JB/T 1308.3-2011 PN2500 Ultra-high pressure valves and fittings - Part 3: Pipe ends JB/T 1308.4-2011 PN2500 Ultra-high pressure valves and fittings - Part 4: Bellows-type joints JB/T 1308.5-2011 PN2500 Ultra-high pressure valves and fittings - Part 5: Hole joint connector JB/T 1308.6-2011 PN2500 High-pressure Valves and Fittings - Part 6: Conical Face Gaskets, Blind Conical Face Gaskets JB/T 1308.7-2011 PN2500 Ultra-high pressure valves and fittings - Part 7: Thread inserts JB/T 1308.8-2011 PN2500 Ultra High Pressure Valves and Fittings - Part 8: Internal and External Washers JB/T 1308.9-2011 PN2500 ultrahigh pressure valves and fittings-Part 9:Joints nuts JB/T 1308.10-2011 JB/T 1308.10-2011 PN2500 Ultra-high pressure valves and fittings Part 10: External wingnut JB/T 1308.11-2011 PN2500 Ultra High Pressure Valves and Fittings - Part 11: Internal and External Threads for Adapters and Fittings JB/T 1308.12-2011 PN2500 High-pressure Valves and Fittings Part 12: Stop Ring JB/T 1308.13-2011 PN2500 High-pressure Valves and Fittings Part 13: Flange JB/T 1308.14-2011 PN2500 Ultra High Pressure Valves and Fittings - Part 14: Double-Sided Bolts JB/T 1308.15-2011 PN2500 Ultra-high Pressure Valves and Fittings - Part 15: Standoff Double-head bolts JB/T 1308.16-2011 PN2500 Ultra High Pressure Valves and Fittings - Part 16: Nut JB/T 1308.17-2011 PN2500 Ultra High Pressure Valves and Fittings - Part 17: Reducing Fittings JB/T 1308.18-2011 PN2500 High-pressure Valves and Fittings Part 18: Reducing Fittings JB/T 1308.19-2011 PN2500 Ultra-high pressure valves and fittings - Part 19: Concentric three-way and four-way adapters JB/T 1308.21-2011 PN2500 Ultra-high pressure valves and fittings - Part 21: Bends

JB/T 1308.20-1999 PN250MPa reducer tee, reducer cross, and reducer square tee with dimensions and technical specifications