GB large-diameter punching elbow manufacturers, high-quality manufacturers preferred township stamping elbow pipe fittings - Thai Extension elbow pipe factory, excellent quality, excellent prices, our company has a certain high reputation, the products in the local manufacturers in the large-diameter punching elbow United States and inexpensive, under urgent orders for customer also can be shipped in time to alleviate the urgent needs of customers, the company credibility has been well received by the majority of customers praise, welcomed the new and old customers call to discuss consultation generally refers to large-caliber elbow was more than DN600 in caliber, large caliber include large-caliber straight seam elbow elbow, elbow welded large diameter seamless elbow. Most used on the market is welded elbow, straight seam and seamless in terms of large-caliber technical equipment in addition to raw materials, then there are expensive. Large-caliber elbow angle can be divided according to a large-caliber elbow 45 degrees, 90 degrees and 180 degrees of large diameter elbow and other large-caliber elbow bend at different angles. Material can be divided according to a large-diameter carbon steel elbow, stainless steel large diameter elbow, steel large diameter elbow. It can be divided according to the radius of curvature large-caliber long radius elbows and short radius large-caliber elbow. Large-caliber elbow main criteria GB, electricity standard, Sinopec standard, marine standard, Japanese standard, American standard. Large diameter elbow with a smooth wall, heat medium flow resistance, acid and alkali, long life, easy installation. Welding elbow, also known as punching elbow, the English name: Welded elbow is a sanitary pipe fittings, elbow belong to species. Connection often used welding named welding elbow. Common welding elbow thickness of 1.5-2 thick. Used in food machinery, the use of small flow pipelines. Often used mirror polished appearance. Common treatment effect can reach 16-32K, industrial standards: ISO, DIN, IDF, 3A, SMS and other elbow in the pipe installation in a common connection with the pipe connecting the two nominal diameter of the same or a different tube so do some tubing angle turn. 1. Material classified carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum, plastic, argon Ge Lek, PVC, PPR and so on. 2. production methods can be divided into pushing, pressing, forging, casting and so on. 3. manufacturing standards can be divided into GB, electricity standard, water standard, American Standard, the German standard, Japanese standard, the Russian standard and so on. 4. It is the radius of curvature of points: can be divided into long and short radius bend radius elbow. Long radius elbow refers to its radius of curvature is equal to 1.5 times the outer diameter of the tube, i.e., R = 1.5D. Short radius elbow refers to its radius of curvature is equal to the pipe diameter, namely R = 1.0D. (D is the diameter of the bend, R is the radius of curvature). Both for export demand, and further, in the country but also to facilitate the delivery to avoid oxidation corrosion, we have to do the job in this regard. Large-caliber elbow fifth, that the demand for packaging, on small tube, such as export, it needs to do on a wooden box, about one cubic meter, the rules in this case can not exceed the number of elbows about a ton, the specification promised suit, namely large sets of small, but generally not exceed the total weight of one ton. Large necessary on a single package, like 24〃 of individual packaging is necessary. Something that is packaging symbol, the symbol is to indicate the scale, steel number, batch number, manufacturer logo. Play on the pipe symbol, along with the packing list and warranty book.