E tender for RC for Removal replacement cleaning and Painting of Oxy-Acetylene Pipe Line System and Supporting Towers Bridges at NDV for a period of three years

Laying and Jointing PVC Pipe. Heading

Removal of old / defective pipes by cutting conforming to IS 15190 (Part I) : 2002

Construction of RCC pedestals / supports conforming to IS 15190 (Part I) : 2002

Supply, laying and fitment of MS angle bar conforming to IS 2062 supports to Pipe lines at buildings / Jetty walls, cope point boxes bottom frames, cope point valve unit securing, new structure for vertical & horizontal bridges / towers :- (a) 100 x 100x 10 mm, 8 mm thickness

(b) 75 x 75 mm, 6 mm thickness

(c) 50 x 50 mm, 5mm thickness

(d) 40 x40 mm, 5 mm thickness

(e) 50 x 100 x 50 x 6 mm U channel

Supply, laying, welding and fitment of MS Seamless pipeline as per IS:1239/1979 part II, ASTM-A-106 Gr-B Sch-40 including clamping at every 3m interval using 6 mm MS “U” clamp and bolting to bottom channel with nut & bolts :- (a) 50 mm dia

(b) 40 mm dia

(c) 32 mm dia,

(d) 25 mm dia, 5 mm thickness

(e) 20 mm dia, 5mm thickness

(f) 15 mm dia, 5 mm thickness

Supply and fitment of CI unlined rubber diaphragm valve with both ends flanged and fitment with SS nut & bolt in built lubrication of “Saunders” make for use in acetylene pipelines (max pressure rating 6 kg/cm2) (Conforming to IS 11791/1986) :- (a) 50 mm Ø

Supply and fitment of 15mm dia CI unlined rubber diapharagm valve conforming to IS 10811/1984 with both ends inner threaded and in built lubrication of “ Saunders” make for use in acetylene pipelines (max pressure rating 6 Kg/cm2) :-

Supply and fitment of gun metal globe valve with both ends flange end and fitment with SS nut & bolt as per BS 10 Table H and max pressure rating of 16 kg / cm2 for used in oxygen pipelines (a) 50 mm Ø

Supply and fitment of gun metal globe valve with both ends outside threaded and max pressure rating of 16 Kg/cm2 for oxygen pipelines conforming to IS 3224:- (a) 25mm Ø

Supply and fitment of gun metal cylinder type valve with wheel for opening / closing as per IS 3224, working pressure 175 Kg / cm2 and 0.5” dia.:- (a) Oxygen.

(b) Acetylene

Supply and fitment of 0.5 Ø Non-return as per IS 15190 (Part I) 2002 for use in acetylene manifold supply line Make-BOC/ equivalent with same form, fit and function

Supply and fitment of 40 mm dia gun metal two way cock conforming to (IS 3081/1988)

Supply and fitment of pressure gauges as per para 7.7 of IS 15190 (part I) suitable for use in oxygen and acetylene lines of following types : (a) 0 – 40 Kg/ cm2 (Oxygen line)

(b) 0 – 5 Kg / cm2 (Acetylene line)

(c ) 0 – 21 Kg / cm2 (Acetylene line)

Supply and fitment by welding 50mm dia shaped MS Seamless pipe (expansion bends). Length of pipeline-2m (Conforming to IS 1239/1979 Part II)

Chipping / Cleaning of pipeline with wire brush to remove rust and applying one coat of anti corrosive primer and two coats of canary yellow paint conforming to IS: 2932:2003 (a) 50 mm Ø

Cleaning of pipeline to remove rust / dust and applying one coat of canary yellow paint conforming to IS : 2932 : 2003 :- (a) 50 mm Ø

Chipping to bare metal / cleaning of cope point boxes applying of one coat of anti corrosive primer and two coats of the black color paint for oxygen boxes, maroon color paint for DA boxes inside and outside of the boxes. Conforming to IS 2932 : 2003

Chipping to bare metal / cleaning of entire metal surface of support bridges / towers and applying of one coat of anti corrosive primer and two coats of canary yellow paint on the inner & outer surfaces conforming to IS 2932:2003.

Cleaning / surface preparation of entire metal surface of support bridges / towers and applying of one coat of canary yellow paint on the inner & outer surfaces conforming to IS 2932 : 2003

Renewal of vertical support structure of towers carrying oxy-Acetylene pipelines , Cutting and removal of old structure and erection of new structure with base plates and gyro rope hooks and brazing supports. (14Mtrs length required for manufacturing of 1Mtr length of bridge) (Conforming to IS 2062)

Renewal of horizontal support structure of bridges carrying oxy-Acetylene pipelines Cutting and removal of old structure and erection of new structure with base plates and supports. (14Mtrs length required for manufacturing of 1Mtr length of bridge) (Conforming to IS 2062)

Cutting, welding and fabrication of towers, bridges, cope point boxes bottom frames and pipe supports charges per angular work (Conforming to IS 2062)

Renewal of Acetylene cope point cover (5 sides only as bottom cover plate is not required) with 3 mm MS sheet. The cover should be welded with heavy duty hinges to the bottom angular and fitted with locking lever on the other side and lifting handle conforming to IS 2062. The type of cope point are as follows:- (a) Double valve cope point of size 0.9 x 0.63 x0.42m

(b) Single valve cope point of size 0.44 x 0.3 x 0.54m

Renewal of Oxygen cope point cover (5 sides only as bottom cover plate is not required) with 3 mm MS sheet. The cover should be welded with heavy duty hinges to the bottom angular and fitted with locking lever on the other side and lifting handle conforming to IS 2062. The type of cope point are as follows: - (a) Double valve cope point of size 1.6 x 0.31 x 0.36m

(b) Single valve cope point of size 0.7 x 0.3 x 0.4m

Supply of Nitrogen for purging / cleaning of pipe lines

Supply and fixing of service brown and white radium stickers of 150 mm width for marking of pipe lines conforming to IS 2370/1990

Supply and fixing of black colour radium sticker for indication flow direction arrows conforming to IS 2370/1990.

Supply of Flash back Arrestors conforming to IS 11006 of following types:- (a) FR-63 of ESAB make

(b) WITTT FBA 85-10

Supply and fitment of line pressure regulators (0-40 Kg/Cm2) suitable for use in oxygen and acetylene pipelines conforming to IS 15190 (Part I ) : 2002

Supply and fitment of gun metal Y-type line filters conforming to IS 15190 (Part II) :2002 (a) 40 mm dia for use in acetylene pipelines

(b) 25 mm dia for use in oxygen pipelines

Fabrication and fitment of FR-63 FBA structure unit with end fitting conforming to IS 2062. (a)1 no FBA (FR-63) Structure unit

(b) 2 no FBA (FR-63) Structure unit

(c ) 3 no FBA (FR-63) Structure unit

(d) 4 no FBA (FR-63) Structure unit

Fabrication and fitment of FBA 85-10 Structure unit with end fitting conforming to IS 2062. (a) 1 no FBA 85-10 Structure unit

(b) 2 no FBA 85-10 Structure unit

Supply and fitment of anchor fasteners as per para 7.5 of IS 15190 (Part I)for support of Oxy-Acetylene pipes at jetties and buildings of following sizes (a) 60 x 10 mm

Supply of C T C for cleaning of pipes

Supply and fitment of MS heavy duty flanges conforming to IS 2062 for valves both sides fitment of oxy-acetylene system of following sizes (a) 50 mm

Supply and fitment of (SS 316)Tail Pipe with both sides end fittings conforming to IS 1239/2011

Supply and fitment of MS Gire ropes 20mm as per para 7.5 of IS 15190 (Part I)

Supply and fitment of “D” Shackles as per para 7.5 of IS 15190 (Part I)

Supply and fitment of Gire ropes dimbel as per para 7.5 of IS 15190 (Part I)

Supply and fitment of Rope tight clamp as per para 7.5 of IS 15190 (Part I)

Supply and fitment of “I” Bolt 20mm x 500mm as per para 7.5 of IS 15190 (Part I)

Supply and fitment of “U” Bolt 20mm x 500mm as per para 7.5 of IS 15190 (Part I)

Supply and fitment of MS “I” channel 150mm x 300mm as per para 7.5 of IS 15190 (Part I)

Supply and fitments of MS plate 12mm as per para 7.5 of IS 15190 (Part I)

Supply of Rubber diaphragms (Conforming to IS 11791/1986) (a) 50 mm Ø

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