Combined capacity : 600,000 TPA

	Helical Submerged Arc Welded Pipes (HSAW)	275,000 TPA
	Longitudinal Seam Submerged Arc Welded Pipes (LSAW)	325,000 TPA

Pipes SAW pipes are large diameter pipes, which are manufactured by welding the edges of steel plates or by spiral welding of hot rolled coil (HR coil). The Saw Pipes manufactured from plates are called Longitudinal Submerged Arc Welded (LSAW) and are mainly used for transporting oil and gas (onshore/offshore). While, Helical Submerged Arc Welded (HSAW) pipes are made from HR coil, where the coil is welded spirally to give a shape of pipe and are mainly used for transporting oil and gas (onshore) and water transport Thus, LSAW pipes have a lesser amount of welding as compared to HSAW pipes, which require extra welding.

Helical Submerged Arc Welded Pipes (HSAW) :

HPML has a production capacity to produce 275,000 tonnes of HSAW pipes and manufactures high quality HSAW pipes confirming to international quality standards. One of the unique feature of the two-mirror image HSAW mill is that it can manufacture pipes of same size or two different sizes simultaneously at a fast speed, thereby drastically reducing the delivery time. Moreover, state of the art automated welding systems is deployed to hasten the process of manufacturing pipes by continuous tack welding, thereby enhancing product quality control. Both the mills are two-step HSAW mills each with 3 SAW welding lines. The HSAW facility, which is an amalgamation of best-in-class technologies, is capable of manufacturing pipes in the range of 16 to 100 inch diameter in 6.4mm to 25.4 mm thickness and grade up to API X 80.

Salient features of HSAW Mill:

	The manufacturing process used for HSAW pipes consists of two steps.
		Pipe forming combined with continuous tack welding.
		Final internal and external submerged arc welding at separate welding stations.
	The two step technology offers both quality and economic Benefits such as:
		High pipe forming speed by continuous Tack Welding.
		Emphasis on pipe geometry on pipe forming machine without hindrance by SAW process, resulting in tightest tolerance even without cold expansion with respect to.
			Straightness
			Roundness
			Accuracy of Diameter
	High quality due to implementation of process automation technology.
	HSAW forming mill has main drive feed motor with 500,000 Nm torque enable to form pipe of 1 inch wall thickness comfortably.

Plant Configration: H-SAW - 1 & 2

Diameter :	16" to 100"
Grade :	X80
Thickness :	6.0mm to 65mm
Pipe Length (max) :	12 meter
Current Capacity :	275,000 TPA
Technology Support :	Malaysia-based Byard; China-based Phamitech

Longitudinal Seam Submerged Arc Welded Pipes:

HPML’s LSAW facility, with an installed capacity of 325,000 TPA, produces high quality pipes adhering to international standards. The manufacturing facilities incorporate the hybrid JCO&E technology, which provides flexibility in terms of thickness & grade, to produce pipes in a diameter range of 16 to 64, 6 mm to 65 mm thickness and grade up to API X 80. The facility also possesses latest inspection and testing equipments to meet specific requirements on execution, strength, tolerance, length etc. The Mill also has valid licenses to use API Monogram

Salient features of LSAW Mill:

	Capacity to produce pipes with very close Diameter Thickness ratio
	Ultrasonic Testing to ensure internal soundness of steel plates used for producing pipes
	LSAW Mill is equipped with 6000 MT JCO press, having capacity to form pipes of 60 mm WT.
	Cold Expander (13 mtr) to ensure tight and uniform control on pipe dimensions

Plant Configration: L-SAW - 1 & 2

Diameter :	16" to 64"
Grade :	X80
Thickness :	6.0mm to 65mm
Pipe Length (max) :	12 meter
Current Capacity :	325,000 TPA
Technology Support :	JCO

Coating

Coating is an effective method to prevent corrosion, resist erosion and enhance operational life of line pipes. HPML has imported technical know-how from Italy-based Socotherm, pioneers of coating. The facility deploys external coating like Fusion Bonded Epoxy (FBE), Dual layer FBE, 3 LPE, 3 LPP and Polyurethane, which are latest methods to prevent corrosion and internal coating like Cement Gunniting, Liquid Paint, Corrosion Resistance, techniques to prevent corrosion and improve product flow.

Salient features of coating :

	Deploys Buggy system, which facilitates pipe specification and eliminates air entrapment.
	Pipe curing system enables higher productivity
	The coating facility is designed to maintain dust-free atmosphere by separating shot blasting and coating.

Coating Unit Configration:

Diameter- external :	4” to 60”
Diameter- internal :	8” to 60”
Pipe weight :	15 MT (max)
3 LPE :	2 Mn sq mt
Liquid Epoxy :	1 Mn sq mt