This category of steel tubes is generally made out of MS material.
As a strategic initiative, the Company acquired Lloyds Line Pipes Ltd, having ready-to-use API certified manufacturing lines, manufacturing upto 14" tubes. The purpose of this specification is to provide standards for pipe suitable for use in conveying gas, water and oil in both the oil and natural gas industries. This specification covers welded steel line pipe. It includes plain-end, threaded-end, and belled-end pipe, as well as through-the-flow line (TFL) pipe with ends prepared for use with special couplings. Although the plain-end line pipe meeting this specification is primarily intended for field makeup by circumferential welding, the manufacturer will not assume responsibility for field welding.

5L
This International Standard specifies requirement for the manufacturing of two product specification levels (PSL 1 and PSL2) of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries. This International Standard is not applicable to cast pipe.

5CT
This International Standard specifies the technical delivery conditions for steel pipes (casing, tubing, plain-end casing liners and pup joints), coupling stock and accessories and establish requirement for two Product Specification Levels (PSL 1 & PSL 2). These steel pipes are used for casing or tubing for well in the petroleum and natural gas industries.