NEW-ERA STEEL TUBE HOLDING
NINGBO PIPEWAY TRADE CO.,LTD
| Place of Origin: | China |
|---|---|
| Brand Name: | New Era |
| Certification: | TS16949/ISO9001 |
| Model Number: | SAE J-525B |
| Minimum Order Quantity: | 5 tons |
| Price: | Negotiation |
| Packaging Details: | Anti Rust Oil Protection, in seaworthy packing material, in hexagonal bundles or in wooden box |
| Delivery Time: | 45 days |
| Payment Terms: | T/T |
| Supply Ability: | 300 tons/month |
| Material: | Low-Carbon Steel SAE1008,SAE1010,SAE1015 | Heat Treatment:: | Bright Annealed,Normalized,Stress Relieved |
|---|---|---|---|
| OD Size: | 5.0-168mm | WT Size: | 0.5-20mm |
| Standard: | Surface Vehicle Standard SAE J525 | Roughness: | Ra:0.2-0.8 |
| Shape: | Round Tubing,Square Tubing,Rectangle Tubing | Application: | Hydraulic Fuild Lines Tubing |
| High Light: | SAE J525 DOM Steel Tubing,Metallic DOM Steel Tubing,Welded DOM Steel Tubing |
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SAE J525 welded hydraulic tubing for hydraulic fluid lines tubing
SAE J525 Metallic round tubing,Carbon tubing,carbon steel tubes
GENERAL
This specification covers cold worked and annealed electric resistance welded low carbon steel pressure tubing
with outside diameter 3/8 inch to 2-1/2 inch, inclusive, for use as hydraulic lines for industrial equipment or other
applications requiring flaring and bending.
CHEMICAL COMPOSITION (percentage by weight)
| Carbon | 0.18 maximum |
| Manganese | 0.30 – 0.60 |
| Phosphorus | 0.040 maximum |
| Sulphur | 0.050 maximum |
MECHANICAL PROPERTIES
The tubing shall conform to the following requirements:
| Tensile Strength | 45,000 psi minimum |
| Yield | 25,000 minimum |
| Elongation in 2 inch | 35 percent* minimum |
| Rockwell Hardness | B65 maximum |
* For tubes with OD of 3/8 inch and/or wall thickness of 0.035, a minimum elongation of 30 percent is permitted.
FLATTENING TEST — A section at least three inches in length shall be taken from every 1500 feet or less of finished
tubing and shall be flattened between parallel plates to three times the wall thickness of the tube. The weld shall be placed
at a point of 90 degrees from the direction of applied force. Any cracking or flaws revealed by this test shall be cause
for rejection. Superficial ruptures resulting from minor surface imperfections shall not be cause for rejection.
REVERSE FLATTENING TEST — A section at least four inches in length shall be taken from every 1500 feet or less
of finished tubing and split longitudinally 90 degrees on each side of the weld and the sample opened and flattened.
There shall be no evidence of cracks or lack of penetration or overlaps resulting from flash removal in the weld.
WELDED HYDRAULIC TUBING/DOM STEEL TUBING/STEEL TUBING
EXPANSION TEST — A suitable specimen shall be taken from each 1500 feet or less of tubing and subjected to an expansion
over a plug. The outside diameter must be expanded 25 percent throughout a length equal to the outside diameter of the tubing
or one inch, whichever is greater. There shall be no evidence of cracking in this test.
PRESSURE OR ELECtrICAL TEST — Tubing supplied under this specification shall have been hydrostatically tested at a fiber
stress of 20,000 psi or at an actual pressure of 5,000 psi, whichever is less, based on the applicable minimum wall, or tested by
use of a nondestructive electrical test approved by purchaser.
DIMENSIONS
When tubing is specified by outside diameter and inside diameter, the tolerances shown in the table shall apply.
|
Nominal Outside Diameter, Inches
|
OD
inches |
ID
inches |
|
3/8
|
±0.002
|
±0.005
|
|
Over 3/8 to 5/8 inclusive
|
±0.0025
|
±0.0025
|
|
Over 5/8 to 2 inclusive
|
±0.003
|
±0.003
|
|
Over 2 to 2-1/2 inclusive
|
±0.004
|
±0.004
|
When tubing is specified by the outside diameter (or the inside diameter) and the nominal wall thickness, the tolerances for the
specified diameter shall apply and the wall thickness shall not vary more than plus or minus 10 percent.
QUALITY
MANUFACTURE — The tubing shall be normalized and followed by a cold working operation. The cold working shall result in
minimum reduction of areas of 15 percent of which at least 8 percent shall be reduction of wall thickness. After cold working,
the tubing shall be annealed in such a manner that the resultant product will meet all requirements of this specification.
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