Whatever the advertisers and various "experts" say, cheaper composite fittings can not completely replace the metal fittings. At least because there are no standards and specifications for its application so far, all available regulatory documents are purely recommendatory. And in the corners of the tape, as well as for securing the individual parts of the frames plastic "connectors" are generally prohibited to use.
All steel bars are divided into several classes, which determines the specific application. Consider the technical characteristics of valves of the brand "A3".It is produced by hot rolling technique and has a periodic profile. To make the bending strength - 2 ribs( corrugated surface), which are "twisted" with a spiral. Raw materials - high-carbon steel( GOST No. 14959 from 1279) or low-alloy steel( GOST No. 380 of 1994) .
Features of fittings
- Good grip with artificial stone.
- Strength.
- Required flexibility.
- Cost is lower than that of analogues.
But there is a drawback - the indicator of "fluidity" is quite high( sometimes the term "low limit" is used), which somewhat limits the scope of use of this fixture.
There are various designations along the bars, which indicate certain properties of the material. They are deciphered as follows:
- K - resistance to corrosion;
- T - metal, which has an increased strength, achieved by heat treatment;
- B - the hood is reinforced;
- C - excellent "weldability"( with the exception of the brand "35GS").
Assortment of reinforcement A3
- Cross-section of rods 6 - 80 mm.
- Specific gravity 0,222 - 7,99 kg / п.м.
Products with a cross section of 8 mm or less are sold in coils, and from 10 - with bars from 6 to 12 m long.
The price can only be estimated approximately, since the price largely depends on the volume of the purchase. The larger the batch, the more substantial the discount. On average, 1 ton of rod will cost about 26,000 rubles.
