APEX offers a wide range of Stainless Steel Pipes & Tubes including welded/seamless straight, U-tubes and coils, welded & seamless pipes, large dia EFW pipes and rectangular and square sections in various finishes and grades. The company is perhaps one of the very few worldwide to offer as wide a product range.
 
 
EFW (ELECTRIC FUSION WELDED) PIPES
 
A combination of specially designed equipments like 1600MT press brake machine, multiple rolls bending machine, welding installations for outside, inside and circumferential welding, size calibrating press, solution annealing furnace and a host of other related machinery, is employed to manufacture pipes used in critical applications like refineries, fertilizers, LNG terminals, cross country pipe lines etc.
  • EFW Pipes Product Range

    TYPE
    		OD WALL
    THICKNESS    		 LENGTH SPECIFICATION
    ETC.    		 WELDING
    METHOD    		 OTHERS
    Pipe with one
    Longitudinal
    Seam    		 8" NB to 24" NB
    (219.1
    to 609.6mm)    		 2.5 to 32mm 6mtrs maximum;
    Double random
    lengths are possible
    with one
    circumferential joint.    		 ASTM A358,
    A409, A778,    		 TIG, Plasma, SAW
    welding used in
    isolation or any
    combination thereof.    		 In Solution
    Annealed or As welded
    condition.
    Finish - Pickled.
    Pipe with
    Circumferential
    Welding Joints    		 18" to 48"
    (457.2 to
    1220mm)    		 2.5 to 14.0mm 3.5 to 6 mtrs ASTM A358,
    A409, A778,    		 TIG, Plasma, GTAW
    welding used in
    isolation or any
    combination thereof    		 In Solution Annealed or
    As welded condition.
    Finish - Pickled.
These products can be supplied in the following grades:
Austenitic Grades: TP304, 304L, 316, 316L, 316Ti, 317L, 321, 321H, 347, 347H.
Ferritic Grades: TP409
Duplex: UNS 31803, UNS 32205, UNS 32304, LDX2101
Edges of the Stainless Steel Plate cut to size are prepared and pre-bent followed by roll forming into pipes. It is prewelded and then the final welding is done using filler material. All welders, welding operators and weld procedures are qualified to the ASME Boiler and Pressure Vessel Code, Section-IX. Heat treatment is done on continuous roller hearth furnace or batch furnace. The pipe is nowsized, pickled & passivated.
  • FIVE CLASSES OF ASTM A-358/ A-358M SUMMARIZED REQUIREMENTS

    TYPE
    		WELDING FILLER
    MATERIAL    		 RADIOGRAPHY
    Class -1 Double Side YES 100%
    Class -2 Double Side YES NA
    Class -3 Single Side YES 100%
    Class -4 Single Side Root pass to be done without filler 100%
    Class -5 Double Side Single Side Spot
 
       
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