Due to differences in proizvodnja procesi, spirala čelik cijev tvornice use valjano i zavarene traka čelik, while bešavne kvadrat cijevi are made by piercing čelik gredice bez zavarivanja bodova. The difference in use is that the pressure ležaj capacity of the Steel Pipe Factory Is Not As High as that the bešav Square Pipe, i The Price Is Different. The proizvod kapacitet of the bešav kvadrat cijev is niska, while the proizvod capacity of the spiral steel pipe factory is high. Two identical models of square pipe and bešavne kvadrat cijevi are much more expensive. If the pressure requirements are not high, the spiral steel pipe factory is still more ekonomično.
Analitičari vjeruju to the accelerated recovery of global economic growth is one of the important factors driving the the rebound of the Fangguan sector. Prethodno, there was a strong bearish sentiment in the US stock market toprema other managed sectors, but nedavno, with the release of better than expected data from the US, Europe, and China, market sentiment has improved.
Izvedba standardi dimenzionalna odstupanja spirala čelik cijev tvornica
The execution standards of spiral steel pipe factories are divided into ministerial standards and national standards. Ministerial spiral steel pipe factories are divided into various execution standards such as SY/T5037-1999 spiral steel pipe factories, GB/T9711.1-1999 spiral steel pipe factories, and GB/T9711.2-1999 spiral steel pipe factories
Izvedba standardi dimenzionalna odstupanja spirala čelik cijev tvornica
Što are the execution standards for spiral steel pipe analysties?
Vanjski promjer od cijevi kraj
Devijacija+2.38mm
-0.79mmD<508 ± 0.75% D
D Greater than or equal to 508 ± 1.00% D ± 1.25% D
Izvedba standardi dimenzionalna odstupanja spirala čelik cijev tvornica
GB/T9711-1997 APISpec5LSY/T5037-2000
Zid debljina odstupanje
D<508+15.0% t -12.5% t
D Greater than or equal to 508+17.5% t-10.5% tD<508 ± 12.5% t
DC508 ± 10.0% t ± 12.5% t
Ravnost
Less than or equal to {{{0}.2% L Less than or equal to 0}.2% L Less than or equal to 0,25% L
Cijev kraj stanje nagib kut 30 stupanj -35 stupanj
Zavar šav armatura
Less than or equal to 3.18mm within 0.5-3.0mm Less than or equal to 2.0mm
Vanjski Manje od ili jednako to 2,5 mm
Dunbian 1.59 ± 0.79mm
Rezanje kut Manje od ili jednako to 1,59 mm, nagib kut 30 stupanj -35} stupanj
Dunbian 1.59 ± 0.79mm
Rezanje kut Manje od ili jednako to 1,59 mm, nagib kut 30 stupanj -35} stupanj