Refractory DIN70 is a product

The so-called standards are based on the comprehensive results of science, technology and practical experience, and are approved by the competent authorities through consensus of the relevant parties, and are issued in a specific form as the guidelines and basis for common compliance.

It is hexagon cylindrical head screw.

Nail the standard. Since the standard number: GB T T has completely replaced GB T70-1985, it means that BAIGB T70 has been deprecated DU. Not adoptable.

The current standard for hexagon round column head screws should be GB T for DAO, and this is the main difference between them.

Cylindrical head hexagon screws, also referred to as hexagon bolts, cup head screws, hexagon screws, their names are different, but the meaning they represent is the same. Generally, the commonly used hexagon socket head screws are grade, grade, grade, grade. Also called hexagon socket screws, also called hexagon socket bolts.

Its head is hexagon and cylindrical.

According to the material, it is divided into stainless steel and iron. The stainless steel one has stainless steel SUS202 hexagon socket head screws, this one is made of stainless steel common material, there are stainless steel SUS304 socket hexagon socket head screws, and there are stainless steel SUS316 socket hexagon socket head screws.

Product standards are the technical specifications formulated for products, and there are four kinds of technical specifications formulated for products in China: national standards, industry standards, local standards and enterprise standards.

According to the Standardization Law of the People's Republic of China, there are corresponding national standards, and enterprises should implement them in accordance with national standards; If there is no national standard, the enterprise can implement the enterprise standard or local standard. Each product standard will correspond to a number, which is the product standard number.

GB70 is the inner six.

Angle cylindrical copy head screws.

BAI standard du.

The production standards of DAO include the following: the standard GB5782 for half-tooth hexagon screws, GB2783 for full-tooth hexagon screws, and GB70-85DIN 912 for hexagon screws. The product size of all hexagon socket screws must meet the above national standards, and the product quality of each screw must meet the quality standard system ISO9001, 2000 seriously, so the manufacturer must produce stable quality and very reliable products.

Hexagon socket screw specifications. The above is the hexagonal garden stigma screw GB70-85 in the check table; Some screws have a head diameter of 2mm in height and hexagon on side size.

The performance level of socket socket screws consists of two numbers, one number indicates the nominal tensile strength of the material of the socket socket screw, and the other number indicates the yield ratio of the screw, and the highest tensile strength of socket screws is as high as 1700n mm2.

Standard number: DIN 70070-2005 Current Chinese name: Diesel engine NOx reducing agent AUS32 Quality requirements English name:

diesel engines - no<(index)x>-reduction agent aus 32 - quality requirements

S18R is a refractory material, which belongs to the first class in the industry, and the refractory standard is 09 series.

S18R refers to a class of inorganic non-metallic materials with a refractoriness of not less than 1580. Refractory resistance refers to the Celsius temperature at which the refractory conical specimen resists high temperature without softening and melting without load. However, the definition of refractory alone is no longer a complete description of refractories, and 1580 is not absolute.

It is now defined as a material whose physical and chemical properties allow it to be used in a high-temperature environment, called a refractory material. Refractories are widely used in metallurgy, chemical industry, petroleum, machinery manufacturing, silicate, power and other industrial fields, and are the largest in the metallurgical industry, accounting for 50% and 60% of the total output.

Are you sure it's S18R? Judging from the initial letter of the grade, it is like a Japanese steel grade, but there is no such steel grade, and there is only S17C in the carbon steel steel for mechanical construction in JIS Japan JIS G 4051:2005

I've seen this material in MAN's standards, so I recommend you go to ISO 6892 (1988) to find it.

Structural and mechanical parts processing pipes General structural pipes.

Mechanical structural tubes.

Pipes for mechanical engineering.

Hydraulic mechanical parts processing pipes.

Pipes for shipbuilding. Aviation tubes.

Geological tubes. Military pipes, hydraulic pipes.

10～45、q295、q345a～e、q390a～e、q460a～e

p235/p265/s335jh series、st37～ 12～18 a、b

20crmo、30crmo、35crmo、42crmo、20cr～40cr、40mn
crmov、12cr1mov、12crmov、38crmoal、12crmo、15crmo、27simn

0cr
cr18ni
cr
cr
cr
cr18ni12mo2ti、1cr18ni
cr18ni9ti

js10、js20、js
simn、js30crmo～42crmo

s18r 、r360～490、ts360～490、st410hd、st360ha～490ha、st360hb～460hb、360ha、360～460hb、410hd

30crmnsia、1cr18ni9ti

dz40～75

d6ae、40cr、2cr18ni11ti、mp16mn、pnicrmo、30～35crmnsia、30crmnsini2a

simn、30mnnbre

gb/t8162/jis g 3445/en
/din1629

gb/t14975

astm a519

gb/t17396、q/cg68

gb/t5312、abs、gl

dnv、bv、rina、ccs

yb678、yb679

YB235GJB459, YBN2, GJB2068, GJB1664 and technical protocols.

gb/t17396

One is the German standard and the other is the Chinese standard, although they are both hexagon countersunk screws, but they are not related to each other.

GB T hexagon countersunk screws.

This section specifies hexagon countersunk screws with thread size M3 M20, performance class and product grade A. Note: Particular attention is paid to the provisions of Table 2 Note and Table 3 on tensile loads.

If other technical requirements are required, they should be selected from current standards such as GB T 196, GB T 3106, GB T and GB T .

"A2-70" is the performance mark of stainless steel bolts, screws, studs and nuts, "A2" before "-" indicates the material group (should be similar to 304), the second group of austenitic steel A2, "-" after the number part "70" indicates the performance level of the product, and its number is 1 10 of the nominal tensile strength, that is, the performance tensile strength of this product is 700N (mm*mm).