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Overview of Single-Crimped Equal Diameter Straight Pipe Fittings

Shenchi single-crimped equal diameter straight pipe fittings are thin-walled stainless steel pipe fittings used for straight, equal-diameter pipe connections. Both ends have the same socket diameter and utilize single-crimping technology: the pipe is inserted into the socket to the marked depth, and a special crimping tool is used for a single radial compression, causing the fitting and pipe to undergo 360° circumferential plastic deformation and tighten. Simultaneously, the built-in EPDM sealing ring is compressed to achieve an elastic seal, eliminating the need for welding or threading. Nominal pressure PN16, specifications covering DN6-DN100, quick installation, reliable sealing, and widely used for straight pipe extension connections in water supply, drainage, gas, and HVAC systems.

Product Parameters

Cost Comparison: Press-fit Fittings Save Money

Compared to welded fittings,the single press-fit equal-diameter pipe fittings from Shenchi, which offer convenient installation, have a lower overall cost. Welded fittings require professional welders, welding equipment, welding rods, and fire prevention measures, resulting in high labor costs and slow welding speeds. Press-fit connections only require a press-fit pliers, which can be operated by ordinary installers after training, with labor costs approximately one-third of welding.

Efficiency Showdown: Press-fit Installation is Faster.

Shenchi's discounted single-press equal-diameter fittings offer a significant advantage in installation efficiency. Welded pipe fittings require multiple processes, including pipe cutting, beveling, spot welding, full welding, cooling, and flaw detection, each with its own waiting time. Press-fit connections, on the other hand, require only five steps: pipe cutting, deburring, marking, insertion, and pressing—all done in one go. For example, 100 DN50 fittings can be completed in one day by two people using the press-fit method, while welding would take 3-4 days for the same person. For large projects with tight deadlines, press-fit connections significantly shorten the construction period, reduce management costs, and the benefits of early delivery far outweigh the price difference in the fittings themselves.

Maintenance Debate: Each Has Its Advantages, Choose According to Needs

Shenchi's conveniently installed single-press equal-diameter fittings and welded fittings each have their advantages in long-term maintenance. Welded fittings, once welded, theoretically have the same lifespan as the pipe itself, requiring no additional maintenance. However, if welding defects occur, repairs are necessary, and cutting and re-welding are very costly. Press-fit fittings rely on EPDM rubber rings for sealing, and these rings have an aging lifespan (typically 20-30 years). However, press-fit fittings are relatively easy to disassemble, and replacing the sealing ring is much simpler than cutting and re-welding. For systems requiring regular maintenance (such as chemical and pharmaceutical industries), press-fit connections offer better maintainability. Overall, press-fit is generally more cost-effective for plumbing projects, while welding is more reliable for high-temperature and high-pressure applications. Shenchi supports ODM/OEM customization. For a direct quote on single-press equal-diameter fittings with preferential treatment, please contact us.