What are stainless steel elbows and what should I pay attention to when purchasing?
Stainless steel elbow is a common stainless steel fittings, by angle, there are 45 degrees and 90 degrees 180 degrees three most commonly used, in addition to the engineering needs also include 60 degrees and other abnormal angle elbows. In addition, according to the process and use, can also be divided into stamping elbows, high-pressure plug elbows, welding elbows, sanitary-grade elbows and so on. Therefore, in the procurement process must clearly choose their own stainless steel elbows, together to see what common considerations are.
1, material: stainless steel elbow material is divided into many kinds, the most commonly used are 201, 304 and 316, 316 than 304 chemical elements more Mo elements, in addition to national standards, U.S. standards, German standards and so on Different countries use standards, these appearances are difficult to distinguish, price differences are relatively large, there are still manufacturers in the selection of raw materials will use potions to distinguish, but there will be errors, the best way is to use a professional spectrometer to detect, high accuracy and easy to use.
2, size: in addition to to determine a good material, then is the specifications, thickness and other dimensions. Most buyers do not have technical support to test product size, take the most common 90-degree stainless steel elbow, the normal R-1.5D, but many manufacturers on the market use molds are mostly 1.25D, shorter than the standard size, don’t look at this 0.25D, the weight of the material is a gap, the reduction of these weights, is the manufacturer to earn more, this in the purchase time to pay attention to, of course, do not rule out the need to purchase specifically non-standard.
Although many times buyers feel that they meet the standard after inspection, but it ignores the one hand, that is, the back arc wall thickness is insufficient. This is due to elbow push will appear in the wall reduction, although the caliber barely strong in line with the standard, but the back is mostly not thick enough, usually manufacturers are relatively clear.
3. Delivery time: customers according to their own urgency, estimate can give the processing master processing time, only the processing master also accepted, this transaction can be reached, otherwise it can only be delayed each other’s time.
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