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Honing pipes used for hydraulic cylinder

Steel Grade: ST 52, other carbon steel, alloy steel, and stainless steel
Metric size:
Inside diameter from 40 to 1250mm
Max length: 12 Meter.
Straightness: 0.5 /1000
Tolerance EXT: DIN 2391
Roughness(Ra): 0.2 to 0.4µ

Raw Material

1. Small size pipe:
Inside diameter 40-300mm, Wall thickness 3-20mm cold drawing steel pipes
2. Big size pipe:
Inside diameter is above 300mm, wall thickness 10-25mm hot rolled steel pipes
Heavy wall steel pipes:
Hot rolled steel pipes or forged hollow bars

Our company own following Equipment:

Deep hole boring machine,
Max inside diameter could be 1250mm, max length could be 12Meter
Deep hold honing machine
Max inside diamter could be 1500mm, max lenght could be 12 meter

Inspection and Test:

Ultrasonic test
Magnetic particle test.
Material mechanical property inspection

Packing:

Inside anti-rust oil coating.
Two ends cover with caps
Steel strip banding and canvas cover

Delivery time: Within 7 days to 30 days.
We have passed through the thirty party inspection: LR, DNV, GL, BV, ABS, RINA etc.