GB/T3087-2008 —— Chinese national standard (seamless steel pipe for low and medium pressure boilers)
GB/T5310 -2008 - China National Standard (Seamless Steel Tube for High Pressure Boiler)
ASME SA106-------US Boiler and Pressure Vessel Code
ASME SA210 - US Boiler and Pressure Vessel Code
ASME SA213 - US Boiler and Pressure Vessel Code
DIN17175 - Federal German industrial standard high pressure boiler tube anti-use range
This standard specifies the classification, size, shape, weight and tolerance, technical requirements, inspection and test, packaging, marking and quality certificate of seamless steel tubes for boilers.
This standard applies to the production of hot-rolled seamless steel tubes for steam boilers, pipes, etc.
Microscope Slides And Cover Slips
1. The glass slide is used to put the sample to be tested, and the cover glass is covered on the sample to be tested.
2. The glass slide is at the bottom, which is the carrier for the material you want to observe, that is, you want to put something on it.
3. The cover glass is smaller than the slide glass. The glass slide is mainly used to hold the observation objects. The cover glass is covered on the slide glass and used for fixing.
4. The glass slide is a thicker piece of glass in the transfer slide, which is used to carry the real object. The cover fragment is the small round or square thin one.
5. Mounting is a general term for a set of things, including slides, coverslips and loaded objects
6. The cover glass is square, the slide glass is rectangular, and the width is longer than the side of the cover glass.
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