TENARIS – (old name MAVERICK TUBE CORPORATION). Company founded in 1978. Nb of employees: 1000. Head office: 16401 Swingley Ridge Road Suite 700 Chesterfield, MO 63017 USA. Manufacturing facilities:

• Blylheville facility 4950 North County Road 967 Blytheville, AR 72315;
• Conroe facility FM3083 PO Box 659 Conroe ,TX 77305.

Tube production: annual tube production (1995): 251 000 metnc tonnes — 277 000 US tons. Tube standards: API 5L, 5CT; ASTM A 53; ASTM ASME. Tubular products:

• Shape, material, process: round — carbon and low alloy steel — continuous forming. Applications: oil, gas, chemicals conveyance (ambient temperature). OD: 60,3...219,1 mm (2,375...8,625 inch). WT: 3,91...12,70 mm (0,154...0,500 inch). Weld: ERW. Material: carbon. Maximum API steel grade: X 70;
• Shapes material, process: round — carbon and low alloy steel — continuous forming. Applications: Water-gas ordinary uses (ASTM A 53). OD: 60,3...219,1 mm (2,375...8,625 inch). WT: 3,91...8,18 mm (0,154...0,322 inch). Weld: ERW. Material: carbon. Maximum yield strength: 241 MPa — 35 ksi. Standard length: 6.4 /12.8 meters -21/42 feet.
• Shapes, material, process: round — carbon and low alloy steel — continuous forming. Applications: Mechanical / precision. OD: 50,8...228,6 mm (2,000...9,000 inch). WT: 3,17...12,95 mm (0,125...0,510 inch). Weld: ERW. Cold drawn. Material: carbon. Maximum length: 15,8 meters — 52 feet.
• Shapes, material, process: round — carbon and low alloy steel — continuous forming. Applications: oil and gas well / OCTG — casing. OD: 114,3...244,5 mm (4,5...9,625 inch). WT: 5,21...13,84 mm (0,205...0,545 inch). Weld: ERW. Material: carbon. Standard length: 6,1 /12,2 meters -20/40 feet. Steel grades: H40, J55, К55, N80, L80, C95, Q125, M50, M65, M75, MAV95, MAV110. Manufacturing sites: Blytheville facility, Conroe facility.
Shapes, material, process: round — carbon and low alloy steel — continuous forming. Applications: oil and gas well / OCTG — tubing. OD: 52,4...88,9 mm (2,063...3,500 inch). WT: 0,16...0,25 mm (0,006...0,010 inch). Weld: ERW. Material: carbon. Steel grades: J 55, N 80, L 80. Manufacturing sites: Blytheville facility, Conroe facility;
• Shape, material, process: square — carbon and low alloy steel. Applications: Structure (building, civil works). OD: 38,1...203,2 mm (1,5...8,0 inch). Formed from welded tube. Material: carbon. Maximum yield strength: 317 MPa — 46 ksi;
• Shape, material, process: rectangular — carbon and low alloy steel. Applications: Structure (building, civil works). OD: 50,8×76,2...101,6×304,8 mm (2,0×3,0...4,0×12,0 inch). Formed from welded tube. Material: carbon. Maximum yield strength: 317 MPa — 46 ksi.

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