詳細說明

Product features：

1. The seam cavity is a composite (T-shaped) seam cavity, and each cut from the outside to the inside of the tube is composed of sequentially connected trapezoidal seams with smaller angles, transition arcs, and trapezoidal seams with larger angles. The outer layer of the lining tube has a small angle of micro trapezoidal shape, with a thickness of 2-3mm. Due to the small angle, the wear rate of the liquid flow on the seam is reduced. The trapezoidal seam with a larger angle in the inner layer of the tube wall can keep the seam cavity unobstructed and has good self-cleaning ability;

2. Significant improvement in corrosion and wear resistance; 

3. The machining accuracy of the seam cavity is high, the seam width tolerance is within ± 0.02mm, the surface is smooth, and the roughness is low, up to Ra1.6;

4. Arrangement of seams: parallel seams, cross seams, and group seams.