Field cutting and Welding - US Pipe

1 RestRained Joint ductile iron pipe and Fittings4" 36"FoR FiRe PRotection, WateR & WasteWateR2013 editionField cutting and WeldingProcedure for tR Flex Pipefield cutting and weldingP 2866. diP . pipe 2013 EditionReVised pipe AND FOUNDRY CO. Field cutting AND Welding PROCEDURE FOR TR FLEX pipe BRO-042 Procedure for tR FlEx Pipe4" 36"NSF Certified toANSI/NSF 61table of contentsField cutting and Welding Procedure 3 Materials and Equipment 4 8 Field cutting and Welding Specifications 9 Minimum Laying Lengths 10 Procedure for ProtECto 401 Epoxy Line tr FLEX pipe 11 12 Products for Water, Wastewater and Fire Protection 13 NOTicE.

2 The procedures described in this brochure are intended to be used by persons having skill in the practice of manual electric arc Welding of ferrous materials and exercising reasonable care in the execution of the instructions contained herein. Since conditions of use are beyond our control, United States pipe and Foundry Company, LLC. makes no warranties, express or implied, and assumes no responsibility concerning the use of these procedures, nor can United States pipe and Foundry Company, LLC. assume any responsibility for product defects arising from the use of these procedures.

3 In case of doubt, contact your nearest Sales Representative for cutting and weldingP 3866. diP . pipe 2013 EditionReVised pipe AND FOUNDRY CO. Field cutting AND Welding PROCEDURE FOR TR FLEX pipe BRO-042 Procedure for tR FlEx Pipe4" 36"NSF Certified toANSI/NSF 61 pipe installations may require Field cutting , particularly where fittings are used. By planning ahead, many Field cuts can be made in the portion of the line involving standard tYtoN JoINt pipe thus eliminating the need to Field weld the tr FLEX FLEX GrIPPEr rings may be used with Field cut tr FLEX pipe for sizes 4" through 36".

4 Your pipe Sales representative can provide more information on tr FLEX GrIPPEr rings. In the event Field cuts are required in the restrained portion of the line, the following recommended procedure may be used. this procedure describes how to weld a preformed round steel bar to the plain end of Field cut tr FLEX pipe to be used instead of the factory applied weld bead furnished on tr FLEX pipe . Pittsburgh testing Laboratory [now called Professional Service Industries, Inc. (PSI)] certified tests on tr FLEX pipe which were welded following this : TR FLEX , TYTON JOINT and TR FLEX GRIPPER are Registered Trademarks of pipe and Foundry Co.

5 , cutting and Welding Procedurealternate Method For Field cut Pipefield cutting and weldingP 4866. diP . pipe 2013 EditionReVised pipe AND FOUNDRY CO. Field cutting AND Welding PROCEDURE FOR TR FLEX pipe BRO-042 Procedure for tR FlEx Pipe4" 36"NSF Certified toANSI/NSF 61 Materials and equipmentthe materials and equipment needed to do the Field Welding are as follows:1. DC arc welder using reversed polarity operating within the electrode manufacturer s recommended amperage ranges for the electrode size AWS (Class ENiFe CI) electrodes, 1/8" or 5/32" for 4" through 36" pipe sizes.

6 INCo Alloys International, Inc. NI-roD 55 electrodes meet this specification. NOTE: Electrode specifications are different for Field Welding epoxy or specially lined TR FLEX pipe . Refer to page 11 of this Grinder to remove oxide from pipe surface (a torch may be used to burn off paint on all but epoxy lined pipe .)4. Proper size ring as per table At least two (2) Welding fixtures and C clamps*. For Welding epoxy lined pipe , additional clamps are two (2) component coal tar epoxy, such as Carboline BItUMAStIC 300M for corrosive soil environments and asphalt paint for other environments.

7 *The Welding fixtures and C clamps are available from 1 to determine if the pipe is suitable for cutting , measure the pipe diameter (or circumference) at the location to be cut. take this measurement square with the longitudinal axis of the pipe . If the dimensions are outside the range given in table 1, select another pipe and repeat this procedure. NOTE: Where the installation requires precise lay lengths, the joint pullout included in Table 2 must be taken into 2 A line must be scribed or otherwise marked on the circumference of the pipe at the proposed cut location to ensure that the cut will be 3 Cut the pipe (preferably with an abrasive saw).

8 : BITUmaSTIC is a Registered Trademark of Carboline cutting and weldingP 5866. diP . pipe 2013 EditionReVised pipe AND FOUNDRY CO. Field cutting AND Welding PROCEDURE FOR TR FLEX pipe BRO-042 Procedure for tR FlEx Pipe4" 36"NSF Certified toANSI/NSF 61 Materials and equipment (cont.)Figure 4 Bevel the cut end using a grinder. the outside of the Field cut end (or any other pipe without a bevel) should match the bevel on a factory beveled pipe . round the leading edge of the spigot end and remove any sharp, rough edges which might cut or snag the gasket.

9 Additional grind-ing may be required to further bevel the pipe if difficulty in assembly is 5 Set the collet on the Welding fixtures to the correct pipe 6 Mark the bar location from the cut end using the Welding fixture as a cutting and weldingP 6866. diP . pipe 2013 EditionReVised pipe AND FOUNDRY CO. Field cutting AND Welding PROCEDURE FOR TR FLEX pipe BRO-042 Procedure for tR FlEx Pipe4" 36"NSF Certified toANSI/NSF 61 Materials and equipment (cont.)Figure 7 Burn the paint from the pipe at the bar location with a torch; then grind the pipe surface over a width of about 2 inches.

10 It is very important that the pipe surface be clean and freshly ground all the way through the pipe dimples anywhere weld will contact the the bar location again as in step 6. the mark should be in the ground area of the pipe . Again, take care to use chalk or other marking device that does not contain lead, grease or other circumferential area of the pipe where the Field weld bar is to be attached, shall be cleaned to remove contaminates and ground to remove surface oxides to provide a sound, bright, clean area for Welding . All surface laminations should be ground through and 8 Clean any rust from the bar with a wire brush.