Walraven Bifix G2 Unlined Clips

A robust and reliable pipe clamp designed for secure fixing across a wide variety of mechanical, plumbing, and HVAC installations. The two screw layout provides dependable clamping strength, while the quick locking system allows fast and efficient installation in both new build and retrofit environments. Manufactured from high-quality steel, it is suitable for supporting metal and insulated pipework where a firm, stable connection is required. Protection is ensured through the BIS UltraProtect 1000 surface treatment, offering long-lasting resistance to corrosion in demanding indoor and outdoor conditions. The range accommodates multiple pipe diameters and installation scenarios, making it a versatile choice for contractors needing durable support components that maintain performance over extended service life.

BIS UltraProtect 1000 (often abbreviated to BUP 1000) is a high-performance surface-treatment/coating system offered by Walraven for their pipe-clamps, rails, brackets and other fixing/support components.

• It is rated for use in corrosive environments classified as C1 to C4 under the standard ISO 12944‑2 (which covers atmospheric corrosion categories). 
• The surface treatment achieves at least 1000 hours in a neutral salt spray (NSS) test per ISO 9227 with a maximum of 5% red rust (i.e., corrosion) on the test specimens. 
• It is a robust alternative to hot‐dip galvanising (HDG). For comparison, typical HDG offers salt spray resistance in the region of 300–600 hours. 
• The finish is smooth, visually attractive, and with a relatively thin protective layer, which offers advantages when you have threaded holes, rods, or complex geometry (where thick galvanising can cause build‐up or poor fits). 
• Environmentally and production-wise, the treatment uses significantly fewer resources than HDG: less energy, less water and fewer emissions.

• ISO 9227:

  • ISO 9227 is the global standard for salt spray testing, providing a controlled method to assess the corrosion resistance of metals and coatings under aggressive saline conditions.

• RAL GZ 655:

  • RAL GZ 655 is a German quality assurance standard that guarantees pipe clamps and pipe fixing products meet high standards of strength, corrosion resistance, material consistency, and long-term safety.

• ETA (European Technical Assesment):
  • A European Technical Assessment is a recognised, Europe-wide technical evaluation that allows a non-standard construction product to be CE-marked and marketed legally across the EU. It ensures consistent testing, reliable performance data, and compliance with the Construction Products Regulation.