Q&A

FREQUENTLY ASKED QUESTION

Q&A

Oil resistance

When immersed in IRM903 oil at 100℃ for 168h according to ISO1817 test, the volume change rate of 4SP and 4SH type hose liner should be 0%~+60% (that is, no shrinkage is allowed).

When immersed in IRM903 oil at 70℃ for 168h according to ISO1817 test, the volume change rate of the outer coating of 4SP and 4SH hose should be 0%~+100 %, that is, no shrinkage is allowed).

When immersed in IRM903 oil at 121℃ for 168h according to ISO1817 test, the volume change rate of R12, R13 and R15 type hoses should be 0%~+100 % of the inner layer and 0%~+125% of the outer layer (i.e. no shrinkage).

Optional pulse test

High pressure tubing wire wound hose type

Optional pulse test

High pressure tubing wire wound hose type

We are a high-tech company engaged in research, development, production and sales. We have obtained API ISO9001:2008, API Spec Q1, ISO/TS29001 and API Spec 7K certifications. The safety mark certificate of mining products issued by the National Safety Mark Center of Mining Products.

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East Zone, Jingxian Development Zone, Hengshui City, Hebei Province

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