MIL-P-11087G(ME)
3.3.3 Physical properties. The mechanical properties for the steel pipes shall be as specified in table 4.1 of API Specification 5L, and the method for testing shall be in accordance with ASTM A370.
3.4 Treatment and painting. All exterior surfaces of the pipe shall be treated and painted in accordance with MIL-T-704, type as applicable. Unless otherwise specified (see 6.2), the top coat shall be in accordance with MIL-C-46168, and the color shall be color chip number 34094 (Green 383) conforming FED-STD-595. Interior surfaces of each pipeline section shall be thoroughly cleaned of all dirt, rust, scale, and foreign matter. When specified (see 6.2), interior surfaces of the pipe shall be given a coating of oil for protection against rusting in transit and storage. The coating applied to the land and groove surface (B & C in figure 2) of the pipe ends shall not exceed 10 mil.
3.5 Type I, groove ends. Type I pipe shall consist of sizes from 4 inches through
14 inches and shall have grooved ends as shown in figure 1. The land surface shall be free from indentations, projections, or heavy roll marks to provide a positive, leakproof seal when coupled with snap-joint couplings. The surface finish of the land and groove area (B & C in figure 1) shall not exceed 125 microinches.
3.5.1 Measurement of groove. The depth of the groove at all points of the periphery shall be one-half of the difference between the land diameter (dimension A in figure 1) and the groove diameter (dimension C in figure 1). Tolerances for 2, 3, 4, and 6-inch pipes shall not exceed +0.010-inch and for 8, 12, and 14-inch shall be +0.013-inch.
3.6 Type II, plain ends. The type II pipe shall have beveled ends in accordance with paragraph 7.3 of API SPEC 5L.
3.7 Identification marking. The pipe shall be identified by rolling, stamping, or stenciling in accordance with MIL-STD-130.
3.8 Workmanship. All parts of the pipe, including the grooves, shall be clean and free from sand, dirt, fins, pits, scale, and other extraneous material. All edges shall be rounded smooth or beveled.
4. QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, and unless disapproved by the Government, the contractor's own or any other facilities suitable for the performance of the inspection requirements specified herein may be used. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.
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