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CAR Shock Absorbers Welded Steel Tube For Hollow Piston Rods

CAR Shock Absorbers

Description

Precision steel tubes for hollow piston rods of shock absorbers

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Type: Cold drawn precision seamless carbon steel tube, cold drawn precision welded carbon steel tube

Standard: EN10305-1, EN10305-2

Steel grade: E355, SAE1035, SAE1045, 20Mn2

Delivery condition: +C, +SR

Application: hollow piston rods of shock absorbers for cars and trucks

Other steel grades and conditions are on request of clients

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Dimensional range:

OD: Up to 40mm

WT: Up to 5mm

Length: Cut-to-length service is available, minimum to 30mm

Any specific size is to be discussed before offer

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The tube be 100% eddy current tested

Ultrasonic test is as option

ID accuracy: H8, H9

Straightness ≤1mm/1000mm

Roughness: Ra ≤0.6

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Delivery condition for availability:

- - - -
+C | Cold drawn / hard |
+LC | Cold drawn / soft |
+SR | Cold drawn and stress relieved |
+A | Bright annealed |
+N | Bright normalized |
- - - -

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The internal and external surface finish of the tubes shall be typical of the manufacturing process and, where applicable, the heat treatment, and it shall be such that any surface imperfections such as ridges, dents or shallow grooves requiring dressing can be identified.

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Any surface imperfections, whose depth cannot be clearly identified, or,
# It shall be permissible to dress, only by grinding or machining, surface imperfections provided that, after doing so, the dimensions are within the specified tolerances. All dressed areas shall blend smoothly into the contour of the tube.
# Surface imperfections which encroach on the specified minimum wall thickness shall be considered defects.

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The tubes shall have smooth outer and inner surface. The roughness Ra shall be:

≤4 μm on the outer and inner surface of tubes in the delivery conditions +C and +LC.

≤4 μm on the outer surface of tubes in the delivery conditions +SR, +A and +N.

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The tubes are tested by means of following norms

EN10002-1

EN10233

EN10234

EN10246-1

EN10246-3

EN10246-7

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Tubes shall be delivered with square cut ends. The ends are free of excessive burrs.

The tubes are bundled in the waterproof plastic sheet and packed in the wooden cases

The case is most suitable for hanging by forklift.

EN10204-3.1 MTC shall be issued

EN10204-3.2 MTC is as option

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Zhangjiagang Bonded Area Henglong Steel Tube Company

Precision Steel Tubing,Heat Exchanger Tubes,Mechanical Steel Tubing

Address: No.5, Taiwan Road, Zhangjiagang Bonded Area, Zhangjiagang City, Jiangsu Province, China,
Zhangjiagang, Jiangsu
China, 215600

Tel: 86-512-58328328
Fax: 86-512-58328332

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