The ASTM A671 is a product specification for an electric fusion welded pipe, with added metal fillers. A671 pipe grades are suited to high pressure applications at lower as well as atmospheric temperatures. The ASTM A671 Pipe is a carbon based stainless steel pipe that is fabricated in pressure quality plate for varying levels of strength. This pipe material includes 0.24% of Carbon, 0.13% to 0.45% Silicon, 0.79% to 1.30% of Manganese. This alloy also contains trace amounts of other minerals. For example, 0.035% of phosphorus and Sulphur can be found in the alloy. Addition of these elements during the formation of the alloy increases its mechanical properties. The Yield strength of this pipes are about 240 Mpa and the pipe’s tensile strength ranges between 450 Mpa to 585 Mpa. The applications of pipe includes industries like ship construction, oil and natural gas, fertilizer, fabrication etc. These pipes aid in the transportation of fluid and gas from the site to the factory. These pipes undergo several tests like Hydrostatic testing or Ultrasonic examination, Eddy current testing and NDT.

The ASTM A672 is a standard electric fusion welded pipe specification which is used in high pressured applications at moderate temperatures. The alloy of ASTM A672 pipe includes alloyants like phosphorus, sulphur and manganese. The tensile strength of the astm a672 pipe could be up to 620 Mpa and its yield strength could be a maximum of 260 Mpa. While its elongation percentage could range anywhere between 21% to 25%, depending upon its grade. The industries that use these pipes are speciality chemicals, chemical equipment, petrochemicals, condensers, heat exchangers, gas processing, pharmaceutical & its equipment, sea water equipment, off-shore oil drilling companies, pulp and paper industry. These pipes have excellent mechanical properties like its tough construction and precise dimension and very durable and are known for its high resistance to corrosion.