Established in 1998. Our company possesses three production lines for production of various seamless gas cylinders. The annual production and sale for gas cylinders of below 20L for 600 thousand pieces, accounting for 90% domestic share in small size gas cylinder market. The recently set up new production line for 0.4L-80L emergency respirator, colliery escape capsule and refuge chamber has the annual production of 700 thousand pieces of cylinders. By the year 2013, the total specifications we do ascent to 109 types to meet different customers' requirement.
Our major products are oxygen cylinder, nitrogen cylinder, carbon dioxide cylinder, argon cylinder, other industrial cylinder, medical oxygen supply unit, etc., with wide application for fields of medical apparatus and instruments, engineering machinery, colliery rescue, gas industry, welding-cutting machinery, and chemical industry. Our cryogenic vessels production line mainly produce cryogenic liquid storage tanks, welding insulation cylinders, cryogenic reaction device, cryogenic tanks, cryogenic ISO tank container and air temperature vaporizer.
So far our products are enjoying good markets at home and exporting to European and American countries, the Middle East countries, West Asia, as well as South and East Asia countries.


Model Number:QF-6A
Working Pressure:150BAR
Suitable Medium:Oxygen, Clean Air and Nitrogen
Nominal Diameter:4mm
Outlet Thread:G5/8
Connection Thread:PZ27.8
Surface:Brass/Chromed
Valve Material:Brass
we are mainly produce
LPG valve
gas cylinder valve
QF-28A valve
oxygen gas cylinder valve
argon gas cylinder valve
40L oxygen gas cylinder valve
oxygen gas cylinder valve
seamless gas cylinder valve
gas cylinder valve
LPG gas cyllinder valve
Brass Oxygen Hydrogen Helium Argon Gas Cylinder Valve (QF/CGA)
2014 Oxygen Gas Cylinder Valve
CGA300 Medical Gas Cylinder Valve
2014 High Pressure Nitrogen Gas Cylinder Valve (QF-7B)
Industrial High Pressure Gas Cylinder Valve (QF-7B)
Brass Oxygen Hydrogen Helium Argon Gas Cylinder Valve (QF/CGA)
100% new high quality seamless steel pipe from China top three steel factory.
Total five working line make 3000pcs per day for oxygen gas cylinder, argon gas cylinder, helium gas cylinder, Nitrogen gas cylinder , Co2 gas cylinder, N2O gas cylinder..etc
China top one advanced heat treatment machine. And China top one internal polishing machine to make high purity gas cylinder with 99.999% oxygen gas, helium gas, N2O gas and argon gas etc.


   Advanced automatic spraying working line make the spraying at high top quality , no any bubble , without shrinkage and distoration .2500T pressure imported from Germany is able to to control the cylinder thickness tolerance under 1.5mm . From pressing to drawing, the whole system is completely automatic .Stamping machine imported from Japan with four stations working at the same time which ensures the cylinder's stamping is clear and even, which is top one in China .DSW seamless gas cylinder have nice appearance shoulders because we use shape-correction machine treatment make the cylinder shoulder most beautiful shape which other supplier can't be compared.Laboratory test standard ISO9809-3 and ISO9809-1, DOT-3AA, EN1964,GB5099 ..etc

100% Hydrostatic prssure test and leakage test to keep the quality. Introduced with American winding machines, vehicle-used CNG composite cylinder (hoop-wrapped with steel liner)is c consistent in appearance, stable in performance, safe and reliable.