• As a leading exporter and supplier of chrome moly pipes in Tunisia, we sell 5000 tons steel pipes per year, including the steel pipes for the high, medium and low pressure boilers. We specialize in selling chrome moly steel heat exchanger tubes, chrome moly steel boiler pipes, and high pressure chrome moly steel pipes in Tunisia. In chrome moly steel, ASTM A335 P11, P22, and P91 pipes are used in power generation and in downstream oil and gas, while P5 and P9 grades are for refinery applications.

• With a collective experience of over 30 years, we have emerged as one of the largest just in time exporter of ASTM A335 P5, P9, P11, P22 and P91 chrome moly steel pipes to Tunisia. Chrome moly steel pipes are used in the energy industry for high temperature and very low-temperature service (cryogenic), or for applications with very high pressures. ASTM A335 chrome moly steel pipes are used in conjunction with ASTM A234 WPx series buttweld fittings (WP5, WP9, WP11, WP22, WP91) and A182 Fx forged fittings and flanges (A182 F5, F9, F11, F22, F91). All these materials have similar chemical (Chrome, Moly, Nickel) and mechanical properties and can be easily welded and installed on site.

• We are devoted to provide the best solutions for our customers in Tunis, Sfax, Sousse, Ettadhamen, Kairouan, Gabès, Bizerte, Aryanah, Gafsa, El Mourouj, the biggest industrial and commercial cities of Tunisia. We have manufacturing set up, sales and export offices in both India and China to meet the immediate and long term chrome moly steel pipe requirements across the Republic of Tunisia. We aim at offering high quality but competitive price chrome moly pipes for our global customers.

Professional Manufacturer of Chrome Moly Seamless Pipes and Tubes, U-Tubes, Alloy Steel Seamless Pipes and Tubes

• Welded Chrome Moly Pipe, Size Range: 1/8″ to 48″
• Seamless Chrome Moly Pipes, Size Range: 1/8″ to 48″
• Thickness – SCH 20, 30, 40, STD, XH, 80, 100, 120, 140, 160, XXH, WT is 2.11mm – 40mm
• Additional Services: Fusion Bond Epoxy, Galvanizing, 3LPE, Tar Epoxy
• Chrome Moly Pipe Grades: ASTM A335 P5, P9, P11, P22, P91

ASTM A335 Pipe (ASME S/A335, Chrome-moly, Cro-moly, CrMo, CRMO, CR-MOLY.) is a seamless ferritic Alloy Steel Pipe for high temperature service application. Pipe ordered to this specification normally used for power industry with P11,P22 grades, and for petro-chemical plants with P91 grade, as well as for refineries with P5 & P9 grades.

The testing requirements for these pipes include the following:

• Transverse/longitudinal: tension and flattening, hardness, bend tests- for material which has been heat-treated in batch furnaces, these tests shall be made on the 5% of the pipes from each heat lot number. For smaller lots, one pipe at a minimum has to be tested
• ASTM A335 Gr. P91 shall have a hardness of 250 HB / 265 HV (25 HRC)
• Hydro testing: shall be applied to every length of pipe
• The non-destructive electric test is optional

Equivalents of Chrome Moly Steel Pipes Under DIN, ASTM and EN

Chemical Composition of Chrome Moly Pipes – ASTM A335 P5, P9, P11, P22, and P91

Mechanical Properties of Alloy Steel Chrome Moly Pipes – ASTM A335 P5, P9, P11, P22, and P91