Bids Are invited for CS PIPES, SIZE : 15 NB - Seamless CS pipe , BW ends, Size : 15 NB,Sch 40 , confirming to SA106 Gr B / SA53 Gr B ( Dual grade )dimensions as per B36.10 ( Length 5 – 7 meter each ) including mechanical and chemical material testing as per attached specification. , CS PIPES,SIZE : 20 NB - Seamless CS pipe , BW ends, Size : 20 NB,Sch 40 , confirming to SA106 Gr B / SA53 Gr B ( Dual grade )dimensions as per B36.10 ( Length 5 – 7 meter each ) including mechanical and chemical material testing as per attached specification. , CS PIPES,SIZE : 25 NB - Seamless CS pipe , BW ends, Size : 25 NB,Sch 40 , confirming to SA106 Gr B / SA53 Gr B ( Dual grade )dimensions as per B36.10 ( Length 5 – 7 meter each ) including mechanical and chemical material testing as per attached specification. , CS PIPES,SIZE : 40 NB - Seamless CS pipe , BW ends, Size : 40 NB,Sch 40 , confirming to SA106 Gr B / SA53 Gr B ( Dual grade )dimensions as per B36.10 ( Length 5 – 7 meter each ) including mechanical and chemical material testing as per attached specification. , CS PIPES,SIZE : 50 NB - Seamless CS pipe , BW ends, Size : 50 NB,Sch 40 , confirming to SA106 Gr B / SA53 Gr B ( Dual grade )dimensions as per B36.10 ( Length 5 – 7 meter each ) including mechanical and chemical material testing as per attached specification. , CS PIPES,SIZE : 80 NB - Seamless CS pipe , BW ends, Size : 80 NB,Sch 40 , confirming to SA106 Gr B / SA53 Gr B ( Dual grade )dimensions as per B36.10 ( Length 5 – 7 meter each ) including mechanical and chemical material testing as per attached specification. , CS PIPES,SIZE : 200 NB - Seamless CS pipe , BW ends,Size : 200 NB,Sch 40 , confirming to SA106 Gr B / SA53 Gr B ( Dual grade )dimensions as per B36.10 ( Length 5 – 7 meter each ) including mechanical and chemical material testing as per attached specification. , CS PIPES,SIZE : 250 NB - Seamless CS pipe , BW ends,Size : 250 NB,Sch 40 , confirming to SA106 Gr B / SA53 Gr B ( Dual grade )dimensions as per