GB/T 18476-2019 Polyolefin pipes for the conveyance of fluids—Determination of resistance to crack propagation—Test method for slow crack growth(notch test) (English Version)
2019GB/T 18476-2019 Polyolefin pipes for the conveyance of fluids—Determination of resistance to crack propagation—Test method for slow crack growth(notch test)
2001GB/T 18476-2001 Polyolefin pipes for the conveyance of fluids--Determination of resistance to crack propagation-Test method for slow crack growth on notched pipes(notch test)