Seamless Elbow
Seamless elbows are also called seamless elbow or seamless pipe elbow in English. Seamless elbow fittings are divided into hot-rolled (extruded) seamless elbow fittings and cold-drawn (rolled) due to their different manufacturing processes. ) Two kinds of seamless elbow pipe fittings. Cold drawn (rolled) tubes are divided into two types: round tubes and special-shaped tubes.
1. Forging method: Use a swaging machine to punch out the end or part of the pipe to reduce the outer diameter. Common swaging machines include rotary, connecting rod, and roller types.
2. Rolling method: Generally, the mandrel is not used, and it is suitable for the inner round edge of the thick-walled tube. Place a core in the tube, and use a roller to push the outer circumference for round edge processing.
3. Punching method: Use a tapered core on the punch to expand the pipe end to the required size and shape.
4. Bending method: There are three commonly used methods, one method is called stretching method, the other method is called stamping method, and the third method is roller method. There are 3-4 rollers, two fixed rollers, one adjusting roller, adjustment With a fixed roll distance, the finished pipe will be bent.
5. Bulging method: One is to put rubber in the tube and compress it with a punch on the top to make the tube protrude into shape; the other method is hydraulic bulging, which is filled with liquid in the middle of the tube, and the pressure of the liquid bulges the tube into the desired shape. For the shape, most of the production of corrugated pipes uses this method.
Seamless elbows have the following advantages:
Hygienic and non-toxic, light weight, good heat resistance, good corrosion resistance, good heat preservation, 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 stabilizer. The hygienic performance of the material has been tested by the national authority.
2, Light weight: The density of stamping elbow is 0.89-0.91g/cm, which is only one tenth of that of steel pipe. Because of its light weight, it can greatly reduce the transportation cost 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. It has excellent acid resistance, alkali resistance, corrosion resistance, no rust, no corrosion, no bacteria, no electricity Chemical corrosion.
5. High impact resistance: Due to its 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 pipe.
6. Long service life: The pipe has a service life of more than 50 years under the rated temperature and pressure. It has anti-ultraviolet and anti-radiation, so that the product will never fade.
Carbon steel: ASTM/ASME A234 WPB, WPC
Alloy: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91 WP911, 15Mo3 15CrMoV, 35CrMoV
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
Low temperature steel: ASTM/ASME A402 WPL3-WPL 6
High-performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70 cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon leaching, PVC, PPR, RFPP (reinforced polypropylene), etc. .
| Material Malleable cast iron | Malleable cast iron |
| Maximum pressure 25 bar (363PSI) (2.5MPA) Class 150 | 25 bar (363PSI) (2.5MPA) Class 150 |
| Maximum temperature 200°C (392°F) | 200°C (392°F) |
| Tensile strength 350MPA | 350MPA |
| Hardness HB150 (Brinell) | HB150 (Brinell) |
| Elongation 10% | 10% |
| Suitable application water, oil, gas, petrochemical | Water, oil, gas, petrochemical |
| Standard EN10242 / ANSI / ASME B16.3/DIN2950 / IS0 49 / NBR6943 / IS1879 / BS EN10242 | EN10242 / ANSI / ASME B16.3/DIN2950 / IS0 49 / NBR6943 / IS1879 / BS EN10242 |
| Thread standard EN10226 / ASME B.1.20.1 / DIN2999 / ISO7-1 / ISO228 / IS554 / BS EN10226 | EN10226 / ASME B.1.20.1 / DIN2999 / ISO7-1 / ISO228 / IS554 / BS EN10226 |
| Working pressure PN25 / 2.5Mpa / 363PSI /CLASS 150 / 25Bar | PN25 / 2.5Mpa / 363PSI /CLASS 150 / 25Bar |
| Packing details Carton with/without pallet, double woven bag, | Carton with/without pallet, double woven bag, |
| Or according to the buyer's request. | Or according to the buyer's request. |
| Delivery details are based on the quantity and specifications of each order. To | According to the quantity and specifications of each order. To |
| The normal delivery time is 30 to 45 days after receiving the deposit. | |
| Shipping is convenient for large orders. To |
