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Buttweld mechanical tubing is made from buttwelded or continuous welded tube hollows, drawn to size with a mandrel. It is produced in OD sizes ranging from 1/4 inch to 3-1/2 inch OD. The tubing is cold drawn for the purpose of obtaining dimensional accuracy and improved mechanical properties. Applications include axles, truck and railroad parts, and many more where weight-to-strength ratio and tolerances are important.
ASTM A512 ASME SA512 Standard for Cold-Drawn Buttweld Carbon Steel Mechanical Tubing covers cold-drawn buttweld carbon steel tubes for use as round, square, rectangular or special shape mechanical tubing. The carbon steel can be made unless a specific type of melting process is required by the purchaser.
This specification covers cold-drawn buttweld carbon steel tubes for use as mechanical tubing.
This specification covers round, square, rectangular, and special shape mechanical tubing.
Round tube size ranges covered are outside diameters up to 3 1/2 in. (88.9 mm) and wall thickness from 0.035 to 0.500 in. (0.89 to 12.70 mm).
(Including Ovality) Mandrel Down
OD Size Range Inches | OD Tolerance Inches | ID Tolerlance Inches |
0.500 to 1.499 | +0.005 | +0.000 |
– 0.000 | – 0.005* | |
1.500 & Over | +0.010 | +0.000 |
– 0.000 | – 0.010 |
*Under 0.500 inch ID a greater tolerance may be required.
Wall
Mandrel drawn plus or minus 7 percent, except when walls are lighter than 0.156 inch, the tolerance is plus or minus 10 percent.
Length
Mandrel Drawn
Length Range Fleet | OD Size Range Inches | Tolerance Inches |
4 and less | to 2.000 | +1/16-0 |
4 and less | 2.001 & Over | +3/32-0 |
4 to 10 | to 2.000 | +3/32-0 |
4 to 10 | 2.001 & Over | +1/8 -0 |
Over 10 | All | +1/8 -0 |
Straightness — Mandrel Drawn
0.030 inch maximum deviation from a straight line in a three foot length. Under three feet, 0.010 inch per foot. Soft annealed tubing or small diameter long lengths may exceed these figures.
Concentricity — Mandrel Drawn
5 percent of the wall. The wall is calculated from the mean OD and mean ID after applying standard tolerances. 5 percent eccentricity equals 10 percent total indicator reading when chucked on the OD and gaged on the ID or vice versa
MECHANICAL PROPERTIES
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Grade | Minimum Yield, PSI | Minimum Tensile, PSI | Elongation Percent in 2 In. | Minimum Hardiness Rockwell B |
C-1010 | 58,000 | 63,000 | 15 | 70 |
C-1012 | 58,000 | 63,000 | 15 | 70 |
C-1015 | 60,000 | 66,000 | 14 | 72 |
C-1016 | 61,500 | 67,000 | 13 | 73 |
C-1018 | 62,500 | 68,000 | 13 | 73 |
C-1020 | 65,000 | 71,000 | 11 | 73 |
C-1030 | 70,000 | 80,000 | 10 | 80 |
C-1110 | 58,000 | 63,000 | 15 | 70 |
C-1115 | 62,500 | 68,000 | 13 | 73 |
*Soft and intermediate annealed tubing is also available.
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Pipe/ Tube Type | NB Sizes | Sch 5 | Sch 10 | Sch 40 | Sch 80 | Sch 160 |
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ASTM A512 Tubing | 1/2 | |||||
ASTM A512 Tubing | 3/4 | |||||
ASTM A512 Tubing | 1 | |||||
ASTM A512 Tubing | 1.25 | |||||
ASTM A512 Tubing | 1.5 | |||||
ASTM A512 Tubing | 2 | |||||
ASTM A512 Tubing | 2.5 | |||||
ASTM A512 Tubing | 3 | |||||
ASTM A512 Tubing | 3.5 | |||||
ASTM A512 Tubing | 4 | |||||
ASTM A512 Tubing | 5 | |||||
ASTM A512 Tubing | 6 | |||||
ASTM A512 Tubing | 8 | |||||
ASTM A512 Tubing | 10 | |||||
ASTM A512 Tubing | 12 | |||||
ASTM A512 Tubing | 14 | |||||
ASTM A512 Tubing | 16 | |||||
ASTM A512 Tubing | 18 | |||||
ASTM A512 Tubing | 20 | |||||
ASTM A512 Tubing | 22 | |||||
ASTM A512 Tubing | 24 |
Surface Finishes: Bare, Oiled, Mill Varnish, Galv, FBE, FBE Dual, 3LPE, 3LPP, Coal Tar, Concrete Coating and Tape Wrap.
End Finishes: Beveled, Square Cut, Threaded & Coupled.
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ASTM A512 Tubing in Seamless & Welded both are loose or in bundles tightened with Iron Strips. Special packings: Metal or Wooden Cases, Pallets etc. Plastic closes both ends, Hexagonal bundles maximum 2.000 kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and IN in sackcloth with several steel strips, Plastic caps.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested. We can also offer customized packaging forASTM A512 Tubing as per customer's requirement.
Marking Requirements
Rolled, die stamped, or paint stenciled (manufacturer’s option).
Overseas Packaging
Export packaging is geared towards the protection, handling and transport ofASTM A512 Tubing by air or sea freight and, as such, shares many characteristics with export and transport packaging. Utmost care must also be taken to make overseas packaging suitable for long periods of storage. It is important for overseas packaging to be designed with ease of handling in mind, so as to ensureASTM A512 Tubing is treated with the utmost care at all times.
Authorised Dealer & distributor of | ||||
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United Seamless Limited -usl ASTM A512 Tubing | Bao Steel- Bao ASTM A512 Tubing | Yangzhou Lontrin Steel Tube -lontrin ASTM A512 Tubing | Sumitomo Metals Smtm ASTM A512 Tubing | Tenaris -tnrs ASTM A512 Tubing |
Valourec & Mannesman -v&m ASTM A512 Tubing | Wuxi ASTM A512 Tubing | Maharastra Seamless Limited -msl ASTM A512 Tubing | Indian Seamless Metal Tubes Limited _ismt ASTM A512 Tubing | Jindal Saw Ltd -jsl ASTM A512 Tubing |
Vendor & Suppliers of | |||||
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