Matters needing attention when purchasing stainless steel elbow
Stainless steel elbow is a common kind of stainless steel pipe fittings. According to the Angle, there are 45° and 90° 180° three most commonly used, in addition to the project needs also include 60° and other abnormal Angle elbow. In addition, according to the process and main use, it can also be divided into stamping elbow, high pressure socket elbow, butt welding elbow, sanitary elbow and so on. Therefore, you must clearly choose more suitable for their own stainless steel elbow in the process of purchase.
1. Material: Stainless steel elbow material is divided into many kinds, the most commonly used 201, 304 and 316. 316 has more molybdenum in it than 304. In addition, there will be gb standard, American standard, German standard and other different countries of the use of standards. These appearances are indistinguishable and the price difference is relatively large. Now there are still manufacturers in the selection of raw materials will use potions to identify, but there will be deviation, the best way is to use a professional spectrometer to test, high accuracy and easy to use.
2. Specification: In addition to determining good material materials, there is a specification model, thickness and other specifications and size problems. Most buyers do not have the technical support to check product specifications and dimensions. Take the most common 90 ° stainless steel elbow for example, normal R=1.5D. However, most of the molds used by many manufacturers on the market are 1.25D, shorter than the standard size. Do not underestimate this 0.25D, but there is a gap in the net weight of the material, the reduced net weight, that is, the manufacturers earn more. This in the purchase of time to pay special attention to, of course, does not rule out the need to buy special non-standard.
Although a lot of time after the buyer is tested to feel the quality requirements, but ignored on the one hand, that is, the wall thickness of the back arc is insufficient. This is because the elbow push system will appear to reduce the wall, although the caliber barely meets the quality requirements, but the vast majority of the back orphan is not thick enough, usually the manufacturer is relatively clear.
3. Delivery time: The customer according to the urgency of their goods, estimate can give processing master processing time, only processing master also accepted, this transaction can be realized, otherwise it can only be delayed each other's time.