Are steel elbows classified as seamed and seamless

Steel elbows are divided into two types: seamed and seamless. The main difference lies in the raw materials. Seamless steel elbows are made of seamless pipes. Seamed steel elbows refer to butt-welded steel elbows and straight seam steel elbows.

The difference between butt-welded steel elbows and seamless steel elbows is that butt-welded steel elbows have two welds, straight seam steel elbows have one weld, and seamless steel elbows have no welds. Seamless steel elbow has the following advantages: hygienic and non-toxic, lightweight, good heat resistance, good corrosion resistance, good thermal insulation, good impact resistance, and long service life.

1. Hygienic and non-toxic: The material is completely composed of carbon and hydrogen without adding any toxic heavy metal salt stabilizers. The hygienic performance of the material has been tested by the national authoritative department.
2. Lightweight: The density of stamped steel elbows is 0.89-0.91g/cm, which is only ten times that of steel pipes. Due to its lightweight, it can greatly reduce transportation costs and the construction intensity of installation.
3. Good heat resistance: when the working water temperature is 70 degrees, the softening temperature is 140 degrees.
4. Good corrosion resistance: Except for a few hydrogenating agents, it can withstand the erosion of a variety of chemical media, has excellent acid resistance, alkali resistance, corrosion resistance, will not rust, will not corrode, will not breed bacteria, and has no electricity. Chemical corrosion.
5. Good thermal insulation: Due to the low thermal conductivity of the material, the thermal conductivity at 20 degrees Celsius is 0.21-0.24W/mk, which is much smaller than steel pipes (43-52W/mk) and purple steel pipes (333W/mk), so PP-R The tube has good thermal insulation.
6. High impact resistance: Due to the unique impact strength performance, it is significantly improved compared to other solid wall pipes, and its ring stiffness is equivalent to 1.3 times that of the solid wall.
7. Long service life: The pipe has a service life of more than 50 years under the rated operating temperature and pressure. It is anti-ultraviolet and anti-radiation, making the product never fade.