Weight of Pipe

The weight of steel pipe is expressed in weight per foot. There are two kinds of steel pipe weights, actual and theoretical. Scale weights (actual) may vary from theoretical weights because of tolerances in the manufacturing process. All weights per foot in the charts contained in this manual are based on theoretical weights. All weights are calculated on the basis of a cubic inch steel weight of .2833 pounds.

Prime/Reject/Structural Grade Pipe

Producing mills at the time of manufacturing reject pipe which cannot be classified as a prime product because of some physical or chemical defect. This material is sold by the mills to steel pipe distributors, distributors of steel products, fabricators and consumers.

Reject pipe is available in CW, ERW, DSAW and Seamless, in all sizes, weights and classes of material. Although reject pipe carries no warranty whatsoever, it can have application for structural purposes. Some typical examples where reject pipe has been used are: handrails, columns, posts, piling, sandwash, casing culverts, fence, caissons, sign poles, bumpers, bracing, parking meter posts, towers, supports, rollers, etc. Reject pipe is normally priced substantially under prime pipe and can affect large savings in the right application. However, the buyer should be kept continually aware that this material carries no warranty of any kind, either expressed or implied, from the producing mill or the pipe distributor.

Reject pipe is also known in the trades as Structural Grade Pipe and/or Limited Service Pipe. Limited Service Pipe, in certain instances, encompasses pipe which is manufactured to a specific ASTM or API specification, but because of some chemical or physical flaw does not meet the rigid requirements of the intended specification. This pipe could be subjected to lesser hydrostatic test pressures than the original specifications required and this product could be classified as Limited Service or Minimum Test Pipe. Limited Service or Minimum Test Pipe of this description can have application in low pressure situations such as water well or surface casing. Generally, when Limited Service Pipe has been subjected to a minimum test it will be clearly marked on the product.

Prime Pipe Grades:

• ASTM
• A-106B
• ASME SA-106B
• ASTM A-53GR A or B
• ASME SA-53B
• ASTM A53 Type F
• AP15L GR B
• API 5L X-GRADES
• ASTM A-252 GR I, II & III
• ASTM A-139 GR B
• ASTM A-501
• ASTM A-500GR A/B or C.