Quality Control

The purpose of this section is to display the general parameters and guidelines for the quality control of products manufactured on a day to day basis at the manufacturing facilities of U.S. Pipe Fabrication

It is the intent of U.S. Pipe Fabrication to furnish products of the highest quality, using the best materials and workmanship available. All personnel involved in the quality control process, whether they are the location manager, or their designee, will conduct themselves in a professional manner, with the best interests of U.S. Pipe Fabrication, and the customer in mind.

Qualifications:

While the responsibilities for manufacturing, and shipping, a quality product, in a timely manner, is shared by all employees of U.S. Pipe Fabrication, it is up to the location manager to ensure that the quality of the product is not compromised. All location managers of U.S. Pipe Fabrication are highly qualified to perform the necessary functions required to inspect, and either accept, or reject, the products that are manufactured at their respective facilities. At the location manager's discretion, a qualified representative may be appointed by them to assume the inspection duties on behalf of the location manager.

When required, quality control reports are completed to reflect findings as prescribed by the work order, or the "job specification sheet".

Responsibilities:

It is the responsibility of the location manager, or their designee, to ensure that materials received for a specific project are the proper materials for that project, and that the materials are marked for the project for which they were purchased. If the material for a project, or order, is to be pulled from stock, the location manager, or their designee, continually monitor production to ensure the proper materials are being used.

It is the responsibility of the location manager, or their designee, to be sure that all materials being shipped to customers, or project locations, meet the requirements set forth on the work order, or the "job specification sheet". Any questions concerning product description, or other criteria, will be directed to the order originator, or the location manager. No products are to be released to the shipping department without the approval of the location manager, or their designee.

The location manager, or their designee, will escort any visiting outside inspectors and furnish them with any documentation required, as set forth on the work order, or on the job specification sheet, pertaining to the material, and/or workmanship of products they are to inspect.

It is also the responsibility of the location manager, or their designee, to communicate with the project manager, and/or inspector, should on-site problems arise. If on-site repairs, or meetings, are necessary, the location manager, or their designee, will accompany, and assist any personnel required to go to project job sites for such repairs, or meetings, until all parties concerned are satisfied that U.S. Pipe Fabrication has furnished an acceptable product. The location manager, or their designee, will keep the management of U.S. Pipe Fabrication advised of any, and all problems at project job sites, and their final outcome.

It is the responsibility of the location manager, or their designee, to preview all work orders prior to their release for production. Any discrepancies will be brought to the attention of the order originator.

General Procedures:

The following general procedures are followed (listed by department).

Machine Department:
Check for accuracy of all lengths, diameters, thicknesses, end preparations, finishes, hole alignments, groove dimensions, tap locations and sizes, or any other material or workmanship which may be defective, or out of tolerance, as prescribed by the work order, or as set forth in the AWWA standards.

Ductile iron flanged pipe will be hydrostatically pressure tested per U.S. Pipe Fabrication, company policy to ensure that the threaded joints are watertight. The hydrostatic testing will be performed using approved testing flanges. In unusual cases using blind flanges, test plugs, test caps, or other suitable means may be required to cap off the ends, and qualify the threaded joint to ensure against the possibility of leakage due to faulty fabrication of the flange to the pipe.

Inspection is completed prior to removal of material to the next department.

Steel Fabrication Department:
Checks against dimensions on "approved" shop drawings, or work order, for compliance of length, diameter, wall thickness, end preparations, collars, hole alignment, coupling size and location, and weld integrity are done. All welds are to be full penetration, and dye penetrate checked for a minimum of four hours. Dye penetrate check will be per U.S. Pipe Fabrication's standard procedure for leak detection.

Inspection must be completed prior to removal of material to the next department.

Coating Department:
Check for proper type of lining and coating. There should be no runs, drips or sags, or excessive thicknesses. The appropriate material preparations will be made for all linings and coatings. All linings and coatings are checked for minimum allowable mil thickness with an acceptable mil thickness gauge. All linings and coatings are checked for voids, or "holidays", with a wet sponge holiday detector, set at ninety volts, or as otherwise called for on the drawings, or on the work order. Checks are made for all bolt hole clearances, groove dimensions, tapped holes for coating, or tape residue, excessive build-up of coating, or lining, or any other defects which may compromise the integrity of the coating, or lining. In addition, checks are made on surfaces which are to remain un-coated to ensure that there is little, or no residue.

Inspection must be completed prior to removal of material to the next department.

Glass Lining Department:
Check glass lining in pipe and fittings for mil thickness, and voids, or "holidays", to ensure compliance with specifications as set forth on the work order. The pipe will be checked for straightness per standard specifications and check the ends for roundness.

Inspection must be completed prior to removal of material to the next department.

References:

C104/A21.4 American National Standard for Cement Mortar Lining for Ductile Iron Pipe and Fittings for Water.
C110/A21.10 American National Standard for Ductile Iron and Grey Iron Fittings, 3" through 48" for Water and Other Liquids.
C111/A21.11 American National Standard for Rubber Gasket Joints for Ductile Iron and Grey Iron Pressure Pipe and Fittings.
C115/A21.15 American National Standard for Flanged Ductile Iron Pipe With Threaded Flanges.
C150/A21.50 American National Standard for the Thickness Design of Ductile Iron Pipe.
C151/A21.51 American National Standard for Ductile Iron Pipe, Centrifugally Cast in Metal Molds, for Water or Other Liquids.
C153/A21.53 American National Standard for Ductile Iron Compact Fittings, 3" through 24" for Water or Other Liquids.
C200 AWWA Standard for Steel Water Pipe, 6" and Larger.
C205 AWWA Standard for Cement Mortar Protective Lining and Coating for Steel Water Pipe - 4" and Larger - Shop Applied.
C207 AWWA Standard for Steel Pipe Flanges for Waterworks Service - Sizes 4" Through 144".
C208 AWWA Standard for Dimensions for Fabricated Steel Water Pipe Fittings.
C209 AWWA Standard for Cold Applied Tape Coatings for the Exterior of Special Sections, Connections, and Fittings for Steel Water Pipelines.
C210 AWWA Standard for Liquid Epoxy Coating Systems for the Interior and Exterior of Steel Water Pipelines.
C213 AWWA Standard for Fusion Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines.
C116 Protective Fusion-Bonded Epoxy Coatings for the Interior and Exterior Surfaces of Ductile Iron and Gray Iron Fittings for Water Supply Service.
C214 AWWA Standard for Tape Coating Systems for the Exterior of Steel Water Pipelines.
C606 AWWA Standard for Grooved and Shouldered Joints.

US Pipe Fabrication Logo
Us Pipe Locations

11 Locations...
Coast-To-Coast