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Description of ASTM-A978 2008ASTM A978 / A978M - 08Standard Specification for Composite Ribbed Steel Pipe, Precoated and Polyethylene Lined for Gravity Flow Sanitary Sewers, Storm Sewers, and Other Special ApplicationsActive Standard ASTM A978 / A978M | Developed by Subcommittee: A05.17 Book of Standards Volume: 01.06 ASTM A978 / A978MAbstract
This specification covers composite ribbed steel pipe, precoated and polyethyene lined intended for use for gravity flow sanitary sewers, storm sewers, and other special applications such as water transmission pipe, rehabilitation pipe, slip line pipe, and irrigation pipe. Pipes shall be fabricated in full circular cross-section with helical lock seams and helical ribs projecting outwardly. Specimens cut from production pipe normal to and across the lock seam shall conform to the required values of tensile strength. The pipe shall conform to the required values of nominal inside diameter and sheet thickness. Joint connectors for composite ribbed steel pipe precoated and polyethylene lined shall be specified as soil tight, water-resistant, or watertight. This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 1. Scope
1.1 This specification covers composite ribbed steel pipe, precoated and polyethylene lined intended for use for gravity flow sanitary sewers, storm sewers, and other special applications such as water transmission pipe, rehabilitation pipe, slip line pipe, and irrigation pipe where extra corrosion and abrasion resistance are required. The steel sheet used in the fabrication of the pipe has a polymer coating over a metallic coating of zinc on both sides. In addition, as the pipe is being fabricated, the ribs are filled with polyethylene and then a polyethylene liner is extruded onto the interior surface. 1.2 The exterior polymer precoating provides extra protection of the steel against soilside corrosion, in addition to that provided by the metallic coating, and also provides a dielectric barrier for cathodic protection. The interior polymer precoating provides an adhesive layer between the galvanized steel and the polyethylene lining. The applied lining provides internal protection against corrosion, erosion, and abrasion. By filling the rib which has a deltoid shape (smaller at the opening in the pipe wall than at the bottom of the rib), the polyethylene is mechanically connected to the pipe wall and the polyethylene liner is then thermally bonded to the filled rib. 1.3 This specification does not include requirements for bedding, backfill, or the relationship between earth cover load and sheet thickness of the pipe. Experience has shown that the successful performance of this product depends upon the proper selection of sheet thickness, type of bedding and backfill, controlled manufacture in the plant, and care in the installation. The installation procedure is described in Practice A 798 1.4 This specification is applicable to orders in either inch-pound units as A 978, or in SI units as A 978M. Inch-pound units and SI units are not necessarily equivalent. SI units are shown in brackets in the text for clarity, but they are the applicable values when the material is ordered to A 978M. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ASTM Standards A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings A153/A153M Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware A307 Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength A563 Specification for Carbon and Alloy Steel Nuts A563M Specification for Carbon and Alloy Steel Nuts (Metric) A742/A742M Specification for Steel Sheet, Metallic Coated and Polymer Precoated for Corrugated Steel Pipe A780 Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings A796/A796M Practice for Structural Design of Corrugated Steel Pipe, Pipe-Arches, and Arches for Storm and Sanitary Sewers and Other Buried Applications A798/A798M Practice for Installing Factory-Made Corrugated Steel Pipe for Sewers and Other Applications A902 Terminology Relating to Metallic Coated Steel Products A926 Test Method for Comparing the Abrasion Resistance of Coating Materials for Corrugated Metal Pipe A929/A929M Specification for Steel Sheet, Metallic-Coated by the Hot-Dip Process for Corrugated Steel Pipe B633 Specification for Electrodeposited Coatings of Zinc on Iron and Steel B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel C443 Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets C443M Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets (Metric) D638 Test Method for Tensile Properties of Plastics D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement D1005 Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers D1056 Specification for Flexible Cellular Materials--Sponge or Expanded Rubber D1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer D1435 Practice for Outdoor Weathering of Plastics D2240 Test Method for Rubber Property--Durometer Hardness D3212 Specification for Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric Seals D5576 Practice for Determination of Structural Features in Polyolefins and Polyolefin Copolymers by Infrared Spectrophotometry (FT-IR) D5630 Test Method for Ash Content in Plastics F568M Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners (Metric) F593 Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs F594 Specification for Stainless Steel Nuts F738M Specification for Stainless Steel Metric Bolts, Screws, and Studs F836M Specification for Style 1 Stainless Steel Metric Nuts (Metric) AASHTO Standard LRFDBridgeConstructiKeywords composite ribbed steel pipe; irrigation pipe; liner pipe; polyethylene filled ribs and extruded liner; polyethylene lined steel pipe; polymer coated steel pipe; rehabilitation pipe; sanitary sewer pipe; slip line pipe; storm drain pipe; water transmission pipe; Composites--building applications (specifications); Irrigation piping--specifications; Liner pipe/plate--specifications; Polyethylene (PE) liner applications; Polymer coatings--steel; Rehabilitation--steel structures/applications; Sanitary drainage materials/applications--specifications; Sewer pipe (steel)--specifications; Sliplining; Storm sewer/drainage pipe--specifications; Water supply/distribution systems--specifications; ICS Code ICS Number Code 23.040.10 (Iron and steel pipes) DOI: 10.1520/A0978_A0978M-08 ASTM International is a member of CrossRef. 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