Relevant production equipment

"A man must sharpen his tools to do the job excellently". The HIGOAL FRP tubes employ the state-of-the-art microcomputer filament winding epuipment with mature, practical mechanical drice system and precise mumerical comtrol software. The "doubel dippong" device is a revolutionary technical breakthrough, which ensures the sufficient compounding of resin and fiber, reducing production coats and improving the quality stability.

Physical Chemical parameters

ITEM	Value	Test method
Bending strength(Mpa)	150	GB/T1449-83
Bending modulus(Gpa)	12	GB/T1449-83
Retention ratio of water resistant bending strength %	85	GB/T2575-89
Linear flattening strength(N/mm)	50	GB/T5352-85
Tensile strength(Mpa)	135	GB/T1447-83
Impact Resistanec(KJ/㎡)	170	GB/T1451-83
Thermal deformation temperature(℃)	140	GB/T1643-79
Oxyeng index	25	GB/T8924-88
Barcol hardness	38	GB/T3854-83
Friction coeffcient	≤0.38	GB/T3960

※ HIGOAL is responsible for the accuracy of the above data under the test conditions. 

 
The FRP tubes have excellent corrosion resistanec that is incomparable for inorganic steel, concrete and iron tubes. Listed below is the performanec of the tubes when soaked in common chemicals.

Water	5%Hydrochloric acid	30%Hydrochloric acid	5%Sulfuric acid	100％FeC13	8%Nitric acid	2%NaOH	Glycerin	10％Hydrogen fluorine acid
YES	YES	NO	YES	YES	NO	YES	YES	NO

(1)Please comsult HIGOAL`s  Technical Dept for other applications with chemicals; HIGOAL has made repeated tests on over 50 different chemicals as detailed as possible. However, since chemicals of different brands vary greatly, users still has to perform repeated, careful tests in their own environment. 
(2)HIGOAL can manufacture special purpose FRP tubes resistant to srrong acids, alkali and high-concentration organic solvents.  

Quality advantages

Superior winding tube quality: The design life of filement winding is 50 years (A tube buried in the USA duing World War Ⅱ was excavated for inspection in early 2000, only slight pulverization was found on the surface, most of the strength and rigidity remained in the effective range). The design life of PVC and other thermoplastic tubes is about 10 years. In practice, the life cannot be reached. Most tubes would become useless in 2-3 years` time.