These pipes are manufactured as per BIS standard and are available in deep blue color. One end of the pipe is male threaded where as other end is female threaded socket. Threads are either V type or trapezoid type and protection caps are provided on the threads to protect the threads in transit. Two types of pipes i.e. Shallow Well (C.S.) and Medium Well (C.M.) are available. Shallow Well pipes can be used for depths upto 80 meters and Medium Well pipes can be used upto 250 meter.