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DB31/T 628-2012 The energy efficiency testing and evaluation method of industrial heat exchanger in service via email in VALID please email coc@codeofchina.com for quotation
GB/T 13638-1992 Water level control and alarm devices for industrial boilers via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 16508.4-2013 Shell boilers—Part 4:Fabrication、inspection and acceptance (USD) via email in 1-3 business day VALID
GB 12153-1989 Analysis of water used in boiler and cooling system-Determination for mineral oil-Ultraviolet spectrophotometry (USD) via email in 1-3 business day ABOLISHED
GB/T 28056-2011 General specification for gas pass heat recovery boiler (USD) via email in 1-3 business day VALID
GB/T 14426-1993 Analysis of water used in boiler and cooling system-Determination of sulfite (USD) via email in 1 business day ABOLISHED
GB/T 10180-2003 Thermal performance test code for industrial boilers via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 27698.5-2011 Test method for the performance of heat exchangers and heat exchange element—Part 5:Heat transfer tube for tubular heat exchangers (USD) via email in 1-3 business day VALID
GB 24747-2009 Safety technology conditions for heat transfer fluids (USD) via email in 1-3 business day VALID
GB/T 16507.7-2013 Water-tube boilers—Part 7:Safety appurtenances and instruments (USD) via email in 1-3 business day VALID
GB/T 10820-1989 Boilers using coal for daily life--Thermal efficiency (USD) via email in 1-3 business day ABOLISHED
GB/T 10866-1989 Boiler pressure parts—Metallographic examination and fracture test of weld joints via email in ABOLISHED please email coc@codeofchina.com for quotation
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