Established in 1998, China Guanda Hose Technology Co., Ltd. is a professional cobra pipe manufacturer and wholesaler of hoses and tubes. Our annually capacity of various kinds of hoses is more than 5,000,000 meters. Our customized cobra pipes products are applied in industrial equipment, hotels, villas, toilets, and kitchens. They are widely used in the field of aerospace, metallurgy, petrol-chemical, machinery, architecture, shipping, vacuum, power and light industries.

Corrugated HDPE pipe is easy to recognize due to its highly distinctive 'ribbing'.It is used for many applications such as a 'body guard' to protect sensitive and /or dangerous cables, or as drainage pipes. Another interesting application is for animal tunnels, which are placed under main roads to allow animals to cross the road safely.
HDPE is the first choice for corrugated pipe, compared to concrete, clay or metal, due to the following properties:
Good balance between mechanical strength and product weight
High chemical resistance against corrosion and abrasion
Withstands high loads
Light weight and flexible
Long term performance (> 50 years)
HDPE corrugated pipe is environmentally friendly. Substantial cost savings can be achieved during installation due to its ease of handling, light weight and flexibility.

Blue Diamond Corr-A-Flex is a corrugated HDPE (high density polyethylene) pipe. Corr-A-Flex is available in diameters from 3through 24.Overall lengths are determined by the integral bell spigot design. Laying lengths are 20 feet. Pipe 3through 6is available in 100and 250coils. For highway drainage projects, 3-6maxi-coilsare available in lengths up to 3000. Pipe is also available perforated and slotted in sizes 3-8.
Corr-A-Flex meets ASTM F 405 material specifications in diameters ranging from 4 to 6, and ASTM F 667 for the larger diameters. Perforations and physical properties meet AASHTO M 252 for 10and smaller and M-294 for 12and larger, Type C (corrugated) and CP (corrugated and perforated.) Standard pipe comes with an integral bell and a spigot joint. External couplers are available. Standard bell and spigot pipe meets soil tight specifications per AASHTO M-294.
Installation should be in accordance with written specifications or local agency standards. In lieu of specific requirements, pipe should be installed according to ASTM D 2321.