Macomb Group Approved 070-100-000 Stub End 10 in Std

Product Description

The MACOMB GROUP APPROVED 070-100-000 is a lap joint stub end designed for use in carbon steel buttweld piping systems. Manufactured from carbon steel meeting ASTM A234 Grade WPB material standard, this stub end features a nominal size of 10 inches with a wall thickness of 0.365 inches per STD/SCH 40 schedule. It is paired with a lap joint flange to create a rotatable flange connection, allowing bolt-hole alignment without rotating pipe. Licensed pipefitters and industrial piping contractors install this component in process, utility, and industrial piping systems.

This stub end is suited for industrial and commercial piping installations where a lap joint flange assembly is required. The 10-inch nominal size and STD/SCH 40 schedule make it a standard choice for medium- to large-bore carbon steel piping systems. With a temperature rating of -20 to 650 degrees F and a maximum pressure rating of 1201 psi, it is appropriate for a range of process fluid and utility applications. It is a domestically manufactured component conforming to ASME B16.9 dimensional standards.

Key Features

• Carbon steel construction per ASTM A234 Grade WPB for strength and weldability
• STD/SCH 40 wall at 0.365 inches for standard pressure service
• 12.75-inch lap diameter engineered for standard lap joint flange mating
• 0.5-inch fillet radius for consistent flange seating
• Rated to 1201 psi maximum pressure and -20 to 650 degrees F service temperature
• Domestically manufactured and dimensionally compliant with ASME B16.9

Compatibility

Designed as an OEM-style buttweld fitting for use with standard 10-inch lap joint flanges in carbon steel piping systems conforming to ASME B16.9 dimensional requirements.

Installation Notes

Installation should be performed by a qualified pipefitter or certified welding professional in accordance with applicable codes including ASME B31.1 or B31.3 as required by the system classification. Butt weld the stub end to the pipe end using procedures consistent with ASTM A234 Grade WPB carbon steel prior to assembling the lap joint flange. Confirm the system is fully depressurized, drained, and isolated before any cutting, fitting, or welding work begins. Follow applicable facility hot-work and weld inspection requirements.