Product Overview
The 997 type clamp, also known as the steel plastic conversion clamp or groove type steel plastic flexible joint, is made of QT450 ductile iron material and is a specialized pipe fitting for reducing and converting steel pipes and HDPE plastic pipes. It can be connected to groove steel pipes on one side and flat HDPE pipes on the other side, achieving quick connection between steel pipes and PE pipes of two different materials. It is a commonly used transitional pipe fitting in fire protection and water supply and drainage engineering, and is in the same series as the 995 flat end clamp.
Product Description
Detailed Description
QT450 Ductile Iron Housing: One-piece casting, high strength and good toughness, impact and pressure resistant, not easy to break, meeting fire water supply pressure standards.
Red Epoxy Powder Coating: Inner and outer epoxy resin layers for anti-corrosion and rust prevention, resist rust in humid environments, and the red paint makes it easy to identify on construction sites.
Steel-Plastic Transitional Flexible Structure: One end fits grooved galvanized steel pipe, the other end grips plain HDPE pipe. No need for heat fusion or flanges, allowing direct steel-to-PE pipe connection; flexible structure absorbs thermal expansion and contraction and compensates for slight angular displacement, reducing vibration and noise.
Hafner Split Design, Easy Installation: Split clamp structure, secured with four bolts and built-in rubber seal, no need to cut long pipes during assembly and disassembly, saving time and effort on site.
Useful for Connecting Fire System HDPE Pipes with Galvanized Grooved Steel Pipes; Municipal Water Supply and Drainage, Pump Room Pipe Upgrades, Steel-to-PE Transition Connections; Factory Water Supply and Circulation System Steel-Plastic Pipe Interfacing.
Stable Sealing: Special rubber seal for different steel and PE pipe outer walls, tight under pressure, not prone to leakage; full range of sizes available, DN65~DN300 in stock.
Technical FAQ
Application limits
- Can it be used for steam above 150 C?
- No. Do not use for steam above 150 C unless a written project-specific approval, rated gasket, and compatible body material are confirmed.
- Can it replace any grooved fitting without checking pipe OD?
- No. Pipe OD, groove standard, working pressure, gasket material, and certification scope must be matched.
- Is it suitable for potable water by default?
- No. Potable water use requires confirmation of coating, gasket compound, local sanitary approval, and project compliance.
- Can it be used in corrosive chemical service?
- Not by default. Chemical compatibility must be verified against the medium, concentration, temperature, and coating system.
Order & Delivery
Shipping and lead time
- Factory: Weifang, Shandong, China
- Port: Qingdao Port, approx. 2 hours
- Lead Time: FCL 15-20 days
- Certificate: EN 10204 3.1 mill test certificate available
Certifications
Quality & compliance
Junyue products are manufactured under ISO 9001, ISO 14001, and ISO 45001 management systems, with UL listings and CE marking for international markets.
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