ASTM A500 Structural Welded Pipe

ASTM A500 structural pipe is a standard specification for cold-formed welded structural tubing produced to round nominal pipe sizes. ASTM A500 is the most common specification in North America for Hollow Structural Sections. Since ASTM A500 is a structural specification, round pipe HSS produced to this specification is a fit for applications being used in structural applications and general construction use. The tolerances of A500 are tighter than those of A53, therefore the A500 round pipe HSS has more quality and less variability than A53. Round HSS pipe has a superior surface finish and does not come with a lacquer coating. A500B Structural Pipe is manufactured for use in applications that demand greater strength, closer tolerances, and a superior finish. This product is an excellent choice for painted applications.

Made from 1026 Steel
Meets ASTM A500 or ASTM A513

Stocked Size Range and Shapes

  • 0.500" Sch. 40 to 16.000" XH
  • Stocked in 21.000’ and 42.000’ lengths (cut to length available)

Manufacturing Process

ASTM A500 structural pipe is welded pipe sized tubing made from flat-rolled steel, formed through a roller system and welded using electric-resistance welding. Longitudinal butt joints of welded tubing shall be welded across its thickness in such a manner as to assure the structural design strength of the tubing section. Welded structural steel pipe is normally furnished without the removal of inside flash.

Benefits of Structural Tubing

Strength

HSS has a high strength-to-weight ratio, excellent compression support characteristics and excellent torsional resistance.

Appearance

In exposed applications, especially Architecturally Exposed Structural Steel (AESS) applications in construction, HSS provides preferred visual opportunities for the design of buildings and other structures.

Uniformity

HSS provides uniformity of size, shape, strength and tolerances that make its use totally predictable, especially important for demanding OEM applications.

Ease of Fabrication

HSS can be readily bent, formed, punched and drilled. Improvements in connection design for fastening HSS to itself or other structural materials are improving the ease of fabrication in the field as well

Cost Effectiveness

Due to its higher strength ratio, especially in A1085, HSS is cost competitive with other structural materials. With improved connection and fastening methods, it often enjoys a cost advantage.

Resistance

HSS is fire resistant and does not warp, twist, split, swell or shrink.

Consistency

It resists dry rot and mildew.

Applications by Industry

Construction & Heavy Equipment

  • Cranes, Frames, Roll-Over Protective Structures (ROPS), Numerous Types of Construction Equipment – Bulldozers, Excavators, Steam Rollers, etc. 

Agriculture

  • Cranes, Frames, Roll-Over Protective Structures (ROPS), Numerous Types of Agricultural Equipment – Combines, Sprayers, Harvesters, Tractors, etc., Greenhouse Structures

Infrastructure

  • Columns, Bridges, Buildings, Towers, Signs, Awnings

Fluid Handling

  • Pump Bases, Hydraulic Brackets, Spacers

Machinery

  • Machine Bases, Machine Frames

Oil & Gas

  • Off-Shore Drilling Platforms, Off-Shore Production Equipment, Tooling Racks

Energy

  • Solar Brackets and Bases, Solar Racking, Power Plants

General Fabrication and Machining

  • Racks, Spacers, Bases, Numerous other general welding and machined applications

Automotive & Transportation

  • Auto & Truck Frames, Trailers Truck Bases, Rail Cars, Automotive Racks, Carports

ASTM A500 Pipe Properties (Round Tubing)

Mechanical Properties
ASTM A500
  Grade A Grade B Grade C Grade D
Tensile Strength (min. PSI) 45,000 58,000 62,000 58,000
Yield Strength (min. PSI) 33,000 42,000 46,000 36,000
Elongation in 2 inch (min. %) 25* 23** 21*** 23**
*Applies to specified wall thicknesses (t) equal to or greater than 0.120".  For lighter specified wall thicknesses, the minimum elongation values shall be calculated by the formula: % elongation in 2" = 56t+17.5, rounded to the nearest percent.
** Applies to specified wall thicknesses (t) equal to or greater than 0.180".  For lighter specified wall thicknesses, the minimum elongation values shall be calculated by the formula: % elongation in 2" = 61t+12, rounded to the nearest percent.
*** Applies to specified wall thicknesses (t) equal to or greater than 0.120".  For lighter specified wall thicknesses, the minimum elongation values shall be by agreement with the manufacturer.
Typical Chemical Properties
Chemistry (%) ASTM A500
Grades A, B & D Grade C
Heat Analysis Product Analysis Heat Analysis Product Analysis
Carbon* 0.26 Max 0.30 Max 0.23 Max 0.27 Max
Manganese* 1.35 Max 1.40 Max 1.35 Max 1.40 Max
Phosphorus 0.035 Max .045 Max 0.035 Max 0.035 Max
Sulphur 0.035 Max .045 Max 0.035 Max 0.045 Max
Copper** 0.20 Min 0.18 Min 0.20 Min 0.18 Min
*For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.60% by product analysis
**If copper containing steel is specified in the purchase order
Customized Cut Lengths Available. Specialize Cut Length During Quote Process.