Small angle seamless square tube Small angle square tube Cold drawn seamless square tube Cold drawn square tube S235JR Square and rectangular tube Square and rectangular tube seamless square tube E235D square steel pipe S235JR square steel pipe E235B square steel pipe S235JR square steel pipe E355D square steel pipe S355J2 square steel pipe E355C square steel pipe S355J0 square steel pipe square steel pipe E355B square steel pipe Elliptical steel pipe Oval tube S50 hexagonal steel pipe S36 hexagonal steel pipe Special pipes hexagonal pipe Grinding tube 4140 Cylinder rod 1045 Cylinder rod Cylinder rod Automobile crane counterweight cylinder Automobile crane leg deployment oil cylinder Suspension cylinder of automobile crane Truck crane leg oil cylinder Automobile crane telescopic oil cylinder Automobile crane variable speed oil cylinder Automobile lifting oil cylinder Swing oil cylinder for high-altitude operations High altitude operation steering cylinder High altitude operation steering cylinder Leveling oil cylinder for high-altitude operations High altitude operation leg oil cylinder Variable amplitude oil cylinder for high-altitude operations High-altitude work vehicle cylinder Excavator tensioning cylinder Excavator chassis telescopic oil cylinder Excavator angle push hydraulic cylinder Excavator angle push oil cylinder Excavator swing oil cylinder Excavator bulldozer oil cylinder Excavator arm cylinder Excavator cylinder Excavator boom oil cylinder Mechanical bucket oil cylinder Excavator bucket oil cylinder A355 Heat exchanger seamless pipe Heat exchanger seamless pipe X100QO Pipeline pipe and Petroleum Casing Tube X52NO Pipeline pipe and Petroleum Casing Tube X80Q Pipeline pipe and Petroleum Casing Tube X60N Pipeline pipe and Petroleum Casing Tube X42R Pipeline pipe and Petroleum Casing Tube Pipeline pipe and Petroleum Casing Tube Precision cold-rolled seamless tube Precision Cold Drawn Seamless Tube Cold drawn seamless tube Precision cold drawn steel pipe Precision cold-rolled steel pipe 1045 precision steel pipe 4140 precision steel pipe 4130 precision steel pipe 5140 precision steel pipe S355 precision steel pipe A519 precision steel pipe Precision cold drawn tube Precision cold-rolled tube 1045 precision tube 4140 precision tube 4130 precision tube 5140 precision tube S355 precision tube A519 precision tube 1045 seamless pipe 4140 seamless pipe 4130 seamless pipe 5140 seamless pipe S355 seamless pipe A519 seamless pipe ASTM A106 Gr. B seamless pipe 1020 seamless pipe S355JR seamless pipe E355B seamless pipe 1045 seamless steel pipe 4140 seamless steel pipe 4130 seamless steel pipe 5140 seamless steel pipe S355 seamless steel pipe A519 seamless steel pipe ASTM A106 Gr. B seamless steel pipe 1020 seamless steel pipe S355JR seamless steel pipe E355B seamless steel pipe Mechanical structure tube Mechanical structural steel pipe Mechanical structure pipe Flat elliptical tube Elliptical tube ASME SA213 High-pressure boiler tube ASME A213 Heat exchanger seamless pipe ASME A355 Heat exchanger seamless pipe bucket cylinder boom cylinder bucket arm cylinder bulldozer front shovel oil cylinder swing cylinder Angular push cylinder Chassis telescopic cylinder Tightening oil cylinder Amplitude variation cylinder telescopic cylinder support oil cylinder leveling cylinder Steering cylinder Hanging cylinder Outrigger extension cylinder Counterweight oil cylinder hollow piston rod Solid piston rod Pneumatic piston rod Hydraulic piston rod Precision piston rod Hydraulic cylinder piston rod Cylinder piston tube 1045 piston rod 4140 piston rod Chrome-plated piston rod S35 hexagonal pipe S36 hexagonal pipe S50 hexagonal pipe S355JR(E355B) square steel pipe S355J0(E355C) square steel pipe S355J2(E355D) square steel pipe S235JR(E235B) square steel pipe S235JR(E235D) square steel pipe Seamless square and rectangular tubes Welding square and rectangular tubes Cold-drawn square and rectangular tubes Small-angled square and rectangular tubes A519 precision seamless steel tubes ASME SA106 High-pressure boiler tube ASME SA210 High-pressure boiler tube SA213 High-pressure boiler tube ASME SA335 High-pressure boiler tube BR-X42R Pipeline pipe and Petroleum Casing Tube BN-X60N Pipeline pipe and Petroleum Casing Tube BQ-X80Q Pipeline pipe and Petroleum Casing Tube BNO-X52NO Pipeline pipe and Petroleum Casing Tube BQO-X100QO Pipeline pipe and Petroleum Casing Tube ASTM SA-106B Mechanical structure tube 1020 Mechanical structure tube 1045 Mechanical structure tube 4140 Mechanical structure tube 4130 Mechanical structure tube 5140 Mechanical structure tube S355 Mechanical structure tube A519 Mechanical structure tube ASTM A106 Gr.B Conveyor pipe 1020 Conveyor pipe S355JR Conveyor pipe E355B Conveyor pipe High-precision honing tubes Oil cylinder honing tube Cylinder honing tube 1045 precision seamless steel tubes 4140 precision seamless steel tubes 4130 precision seamless steel tubes 5140 precision seamless steel tubes A519 precision seamless steel tube S355 precision seamless steel tubes Precision honing tube Honing pipe factory Cylinder sleeve Hydraulic cylinder barrel Cold drawn steel pipe Cold-Drawn Steel Tube cold-drawn tube 20cm precision seamless pipe Precision bright tube Precise seamless steel pipe 40cr precision tube 40cr precision steel pipe 20cr precision tube 20cr precision steel pipe 42crmo Honed Tube 42crmo Precision Honed Tube Quilted grinding tube Precision grinding tube Cold drawn grinding tube Hydraulic cylinder pipe Petroleum cracking pipe Petroleum cracking pipes Q355B steel pipe Q355B Seamless Steel Pipe Q355B Seamless Steel Pipes 20 # seamless pipe 20 Seamless Steel Pipe 20# Seamless Steel Pipe Seamless pipes for construction machinery Construction Machinery Steel Pipe Seamless Steel Pipes for Construction Machinery eight-sided steel pipes Octagonal tube Octagonal seamless pipe Octagonal Steel Pipe Hexagonal steel pipe Hexagonal tube Hexagonal seamless steel pipe hydraulic cylinder Precision seamless pipe Precision steel tube Honing steel pipe Special-Shaped Pipe Special-Shaped Pipes Special-shaped steel pipe Special-shaped tubes Special-shaped tube 27simn cylinder tube cylinder tube GB8163 steel pipe 45# steel pipe 20# steel pipe Excavator oil cylinder 27simn Shield machine oil cylinder Shield machine oil cylinder Shield Machine Cylinder 27SIMN Rotary drilling cylinder Q345B Rotary drilling cylinder Rotary drilling cylinder 27simn Crane hydraulic cylinder 16Mn Crane hydraulic cylinder SAE1045 Excavator hydraulic cylinder SAE1020 Excavator hydraulic cylinder Hyraulic cylinders for excavator Excavator hydraulic cylinder Agricultural machinery hydraulic cylinder Crane hydraulic cylinder Mechanical hydraulic cylinder Engineering oil cylinder A106C high-temperature seamless pipe A106C high-pressure seamless pipe A106C seamless pipe SA106B high-pressure seamless pipe SA106B High Temperature Seamless Pipe SA106B seamless steel pipe 12cr1movg high-pressure boiler tube 20G seamless pipe 20G high-pressure boiler tube precision tube precision steel pipe 25mn Precision Honed Tube 27simn Precision Honed Tube 16mn Honed Tube 16mn Precision Honed Tube 45# Honed Tube 45# Precision Honed Tube Precision Honed Tube 20# Honed Tube 20# Precision Honed Tube 27simn Honed tube 25mn Honed tube Honed tube Seamless petroleum pipe Petroleum steel pipe Petroleum cracking tube Petroleum cracking seamless pipe Fertilizer steel pipe SA333 high-pressure boiler tube SA106 high-pressure boiler tube High pressure boiler furnace Seamless pipes for nuclear power Nuclear power steel pipe Nuclear seamless pipe Fluid steel pipe Fluid seamless steel pipe Seamless fluid pipe Structural seamless steel pipe structural steel pipe Structural seamless pipe Seamless fertilizer pipe Fertilizer tube Fertilizer specific seamless pipe Seamless gas cylinder tube Steel pipes for gas cylinders Gas cylinder steel pipe GB3087 Boiler Tube GB5310 High pressure boiler tubes high-pressure boiler tube