Kee Klamp Couplings
Kee Klamp® couplings join and extend lengths of tubular pipe in-line without welding. The Type 14 straight coupling connects two lengths end to end, the Type 18 internal coupling makes a concealed joint inside the pipe, and the Type 145 crossover coupling carries one rail past another. Each fitting slides onto plain-end Schedule 40 pipe and locks with a case-hardened hex set screw, so you can build longer runs and continuous rails on site with no threading and no special tools.
No-Weld, Slip-On Assembly
Kee Klamp couplings are part of a slip-fit pipe system: components connect to plain-end Schedule 40 pipe and lock with a case-hardened hex (Allen) set screw—no welding, threading, or hot-work permits. Tighten to spec with a ratchet wrench and the joint is ready to carry load, so a railing or frame can be built, adjusted, or extended on site with basic hand tools.
OSHA-Ready & Corrosion-Resistant
Couplings are malleable iron cast to ASTM A47 (grade 32510) and hot-dip galvanized to ASTM A123 for indoor or outdoor service. Kee Klamp is a component system: built into a 42" guardrail with the correct pipe, anchoring, and post spacing, sizes 7, 8, and 9 help the assembled system meet OSHA 29 CFR 1910.29 and 1926.502 design loads—compliance is a property of the installed railing, not any single fitting.
FAQs
1. What are Kee Klamp couplings used for?
Couplings extend or join lengths of pipe. Use the Type 14 straight coupling to connect two runs end to end or lengthen a rail, the Type 18 internal coupling for a hidden joint, and the Type 145 crossover coupling to carry one pipe across another—all without welding fittings into the structure.
2. What is the difference between the Type 14, 18, and 145?
The Type 14 straight coupling joins or extends pipe in a straight line with an external sleeve. The Type 18 internal coupling sits inside the pipe ends for a concealed joint. The Type 145 crossover coupling lets one continuous pipe cross over another without interrupting either run.
3. What pipe sizes do Kee Klamp couplings fit?
Couplings fit standard Schedule 40 pipe in eight sizes from 1/4" to 2" (component sizes 2–9); the size is the last digit of the part number. Common railing sizes are 6 (1"), 7 (1-1/4"), 8 (1-1/2"), and 9 (2"). Size 8 fits 1-1/2" pipe and size 9 fits 2".
4. Can I join pipe without welding or threading?
No welding needed. Couplings are slip-on, weldless fittings. Each slides onto plain-end pipe and locks with a case-hardened hex (Allen) set screw tightened with a ratchet wrench—no welding, no threading, and no special tools. That lets you extend or join runs of pipe on site and adjust them later if needed.
5. How much load does a coupled joint hold, and is it OSHA-ready?
Each set screw supports a 2,000 lb (907 kg) axial load when tightened to 29 ft-lb, with a 2:1 safety factor. Kee Klamp is a component system, so a coupled run’s strength depends on the full assembly. When sizes 7, 8, or 9 build a 42" guardrail with correct pipe, anchoring, and spacing, the system can meet OSHA design loads.
6. What are Kee Klamp couplings made of?
Kee Klamp fittings are malleable iron castings to ASTM A47 (grade 32510), hot-dip galvanized to ASTM A123 for indoor and outdoor corrosion resistance. They are designed for standard Schedule 40 steel pipe to ASTM A53. Aluminum (Kee Lite) and Kee Koat powder-coat options are also available.