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GB/T 28799.2-2012
Plastics piping systems for hot and cold water installations - Polyethylene of raised temperature resistance (PE-RT) - Part 2: Pipes
GB/T 28799.1-2012
Plastics piping systems for hot and cold water installations - Polyethylene of raised temperature resistance (PE-RT) - Part 1: General
GB/T 28713.3-2012
Enhanced heat transfer elements used in tube-shell heat exchangers - Part 3：Wavy tubes
GB/T 28713.2-2012
Enhanced heat transfer elements used in tube-shell heat exchangers- Part 2：Stainless steel corrugated tubes
GB/T 28713.1-2012
Enhanced heat transfer elements used in tube-shell heat exchangers -Part 1：Threaded tubes
GB/T 19228.3-2012
Stainless steel press-fitting assemblies - Part 3：Rubber O-rings
GB/T 28708-2012
Specification for size selection of seamless and welded steel pipe used in piping engineering
GB/T 3287-2011
Malleable cast iron pipe fittings
GB/T 27792-2011
Classification for laminated composite gasket materials
GB/T 14904-2011
Rubber and plastics hoses and hose assemblies with wire reinforcements Hydraulic impulse test with flexing
GB/T 7528-2011
Rubber and plastics hoses and hose assemblies - Vocabulary
GB/T 19228.2-2011
Stainless steel press-fitting assemblies - Part 2：Light gauge stainless steel tubes for press-fittings
GB/T 19228.1-2011
Stainless steel press-fitting assemblies - Part1： press-fittings
GB/T 9124-2010
Specification for steel pipe flanges
GB/T 9123-2010
Steel pipe blank flanges
GB/T 9122-2010
Loose plate steel pipe flanges with lapped pipe end、pressed collar and pressed collar with long neck
GB/T 9121-2010
Loose plate steel pipe flanges with weld-on collar
GB/T 9120-2010
Loose plate steel pipe flanges with weld-neck collar and with weld ring neck
GB/T 9119-2010
Slip-on-welding plate steel pipe flanges
GB/T 9118-2010
Loose hubbed steel pipe flanges with welding neck collor