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Pipes are necessary for a variety of liquid systems which include water, sewer, as well as reuse installations which require high purity applications, process control and proper fluid delivery within the systems.

Pipes come in various types of materials in order to cater to the variety of intended purposes that they serve. Some of these types include:

  • Ductile Iron Pipes
  • Polyvinyl Chloride Pipes
  • High Density Polyethylene Pipes
  • Steel Pipes

InTouch is a leading pipes inspection and quality control services provider in China. InTouch only uses the well-known quality control inspection techniques to develop inspection protocols. These inspection techniques could include:

  • Visual Inspections
  • Inspect and take measurements of the thickness of the pipes and ensure the numbers conforms to design specifications.
  • Inspect for indentations, pitting, cracks, uneven surfaces

 

Mechanical Inspection

  • Perform the impact resistance test to determine the impact strength
  • Test the tensile strength of the pipes to determine how the material will react to forces being applied in tension.
  • Perform the deflection temperature test to ensure the pipe sample deforms under a specified temperature and conforms to international standards

Packaging Inspections

  • Check packaging materials by comparing against approved samples and specifications.
  • Inspect necessary packaging marks including model number, quantity per packaging, name and place of business of distributor, country of origin, logos and marks from standards organizations, and stacking and handling marks.
  • Check the safety markings for clarity, size, color, conspicuousness, etc.

Included below are a few well-known quality control standards that Intouch uses in developing pipe inspection protocols:

ANSI/AWWA C151/A21.51-09
The standard intended for 3 inch to 64 inch ductile iron pipes which have been centrifugally cast for a variety of water systems which include waste water and reclaimed water systems.

ANSI/AWWA C150/A21.50-08
The standard intended to describe the thickness features of ductile iron pipes where in it provides an outline for the specific design procedures as well as design examples.

ASTM D1784
The standard intended for rigid polyvinyl chloride compounds and chlorinated polyvinyl chloride compounds which are used for applications involving these types of pipes and fitting. It involves the identification of base resin, impact resistance under notch, tensile strength, modulus of elasticity in tension, deflection temperature under load, and flammability.

ASTM D2241
The standard intended for polyvinyl chloride pipes which have diameters of less than 4 inches. The two basic criteria indicated in the standard include short-term strength tests and long-term strength tests for products intended for use with pressurized liquids and their distribution.

AWWA C906
The standard intended for polyethylene pipes used in the transport of potable water in either buried or aboveground installations. It covers 10 dimension ratios for nominal pipe sizes which range from 4 inches to 63 inches.

AWWA C901
The standard intended to cover polyethylene pressure pipes and fittings which have been intended for use in water systems. It covers pipes which range in nominal sizes of 0.5 inches to 3 inches that comply with the outside diameter dimensions of iron pipe sizes.

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Topics: Industrial Goods

AQF Team

This article was a collaborative effort among various members of the Asia Quality Focus team.

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