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The main uses of the products: hydraulic and pneumatic cylinders, hydraulic pipelines, spinning, textile and printing machinery tubes, automobile shock absorber tubes, shaft sleeve tubes, piston rods and steel tubes for precision machinery.According to the requirements of customers, we can also provide: cut-to-length tubes, honed tubes and special heat-treated tubes, etc.The quality has all reached national standards, and the products are widely used in automobiles, electric power, petrochemicals, ships, aerospace, bearings, pneumatic components, oil cylinders, boiler equipment, medical equipment, fitness equipment, tractors, motorcycles, steel connection sets, cylinder pipes, machinery manufacturing and other industries; established long-term and stable cooperative relations with well-known auto parts manufacturers at home and abroad.
The current production specifications are: inner diameter 12mm-600mm, wall thickness 2mm-60mm.The technical conditions are: inner hole precision H8, inner hole roughness Ra≤0.63um, straightness ≤0.3mm/m.The steel grades are 20#-45#, 16Mn, 27SiMn/304 stainless steel and some low alloy steel, standard GB8713-88.The specifications are 12-600*2-60MM, and various types of cylinder pipes with a length of 2-12M, with an annual production and sales capacity of 30,000 tons.Advanced equipment, optimized production process, perfect detection means.
Hydraulic, pneumatic cylinder specification size, precision Hydraulic and pnoumate linear actuator sandars
Processing methods Working method | Inner diameter of cylinder mm Cylinder ID | length m Length | Straightness mm/m Straightness | Inner Diameter Accuracy ID Tolerance | Wall thickness difference WT Tolerance | Um Roughness |
cold drawn Cold Drawn | 40-320 | ≤12m | 0.2-0.5 | ±5% | 0.8-1.6 | |
cold rolling Cold Rolled | 30-100 | ≥12m | 0.2-0.5 | ±5% | 0.8-1.2 | |
Cold drawing - honing CD-Honed | 40-500 | 8m | 0.2-0.3 | H8-H9 | ±5% | 0.2-0.8 |
cold call-rolling CD-SBB | 40-400 | 7m | 0.2-0.3 | H8-H9 | ±5% | ≤0.4 |
Deep hole boring - honing Rolled-Honed | 320-400 | 8m | 0.2-0.3 | H8-H9 | ±8% | ≤0.8 |
Deep hole boring - rolling Rolled-SBB | 320-400 | 7m | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |
Mechanical propertiesmechanical property
supplycondition steel type Steel grade | cold-drawn (hard)(BK) | Cold drawing + stress relief annealing cold drawn and stress-relieved(BK+S) | hardness Hardness HB | |||
tensile strength TS g bN/mm² | Elongation elongation 35% | tensile strength TS bN/mm2 | Yield Strength YS g sN/mm2 | Elongation elongation 35% | ||
20# | ≥550 | ≥8 | ≥520 | ≥470 | ≥12 | |
45# | ≥650 | ≥5 | ≥600 | ≥520 | ≥12 | |
16Mn | ≥640 | ≥5 | ≥600 | ≥520 | ≥15 | |
25Mn | ≥640 | ≥5 | ≥600 | ≥510 | ≥15 | |
27SiMn | ≥840 | ≥5 | ≥800 | ≥720 | ≥10 | |
The main uses of the products: hydraulic and pneumatic cylinders, hydraulic pipelines, spinning, textile and printing machinery tubes, automobile shock absorber tubes, shaft sleeve tubes, piston rods and steel tubes for precision machinery.According to the requirements of customers, we can also provide: cut-to-length tubes, honed tubes and special heat-treated tubes, etc.The quality has all reached national standards, and the products are widely used in automobiles, electric power, petrochemicals, ships, aerospace, bearings, pneumatic components, oil cylinders, boiler equipment, medical equipment, fitness equipment, tractors, motorcycles, steel connection sets, cylinder pipes, machinery manufacturing and other industries; established long-term and stable cooperative relations with well-known auto parts manufacturers at home and abroad.
The current production specifications are: inner diameter 12mm-600mm, wall thickness 2mm-60mm.The technical conditions are: inner hole precision H8, inner hole roughness Ra≤0.63um, straightness ≤0.3mm/m.The steel grades are 20#-45#, 16Mn, 27SiMn/304 stainless steel and some low alloy steel, standard GB8713-88.The specifications are 12-600*2-60MM, and various types of cylinder pipes with a length of 2-12M, with an annual production and sales capacity of 30,000 tons.Advanced equipment, optimized production process, perfect detection means.
Hydraulic, pneumatic cylinder specification size, precision Hydraulic and pnoumate linear actuator sandars
Processing methods Working method | Inner diameter of cylinder mm Cylinder ID | length m Length | Straightness mm/m Straightness | Inner Diameter Accuracy ID Tolerance | Wall thickness difference WT Tolerance | Um Roughness |
cold drawn Cold Drawn | 40-320 | ≤12m | 0.2-0.5 | ±5% | 0.8-1.6 | |
cold rolling Cold Rolled | 30-100 | ≥12m | 0.2-0.5 | ±5% | 0.8-1.2 | |
Cold drawing - honing CD-Honed | 40-500 | 8m | 0.2-0.3 | H8-H9 | ±5% | 0.2-0.8 |
cold call-rolling CD-SBB | 40-400 | 7m | 0.2-0.3 | H8-H9 | ±5% | ≤0.4 |
Deep hole boring - honing Rolled-Honed | 320-400 | 8m | 0.2-0.3 | H8-H9 | ±8% | ≤0.8 |
Deep hole boring - rolling Rolled-SBB | 320-400 | 7m | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |
Mechanical propertiesmechanical property
supplycondition steel type Steel grade | cold-drawn (hard)(BK) | Cold drawing + stress relief annealing cold drawn and stress-relieved(BK+S) | hardness Hardness HB | |||
tensile strength TS g bN/mm² | Elongation elongation 35% | tensile strength TS bN/mm2 | Yield Strength YS g sN/mm2 | Elongation elongation 35% | ||
20# | ≥550 | ≥8 | ≥520 | ≥470 | ≥12 | |
45# | ≥650 | ≥5 | ≥600 | ≥520 | ≥12 | |
16Mn | ≥640 | ≥5 | ≥600 | ≥520 | ≥15 | |
25Mn | ≥640 | ≥5 | ≥600 | ≥510 | ≥15 | |
27SiMn | ≥840 | ≥5 | ≥800 | ≥720 | ≥10 | |
