問：薄壁焊管，鍍鋅薄壁焊管（guǎn）的豎（shù）向承載力怎麽計算呢？以上計算都是簡單的計算，同時還要考慮安全係數，甚至（zhì）地震載荷，具體的情（qíng）況（kuàng）分析請有經驗的專業工程師計算，以上資料僅（jǐn）供參考使用。
Question: How to calculate the vertical bearing capacity of thin-walled welded pipe and galvanized thin-walled welded pipe? The above calculation is simple, and safety factor, even seismic load, should be taken into account. Experienced professional engineers are required to calculate the specific situation. The above information is for reference only.
答： 1.計（jì）算壓應力，就是豎向壓力作用（yòng）在薄壁焊管的（de）橫截麵上所產生（shēng）的壓應（yīng）力。就是壓力（單位N）除（chú）以薄壁焊管橫截麵麵積（單位（wèi）m平方）。隻要壓（yā）應力小於材料的許用（yòng）應力（lì）即可（kě）。
Answer: 1. Computational stress is the compressive stress produced by vertical pressure acting on the cross section of thin-walled welded pipe. It is the pressure (unit N) divided by the cross-sectional area (unit m square) of the thin-walled welded pipe. As long as the compressive stress is less than the allowable stress of the material. 2.薄壁焊管受壓，要計算穩定（dìng）性。穩定性的計算較為複雜。要看連接的方式是兩（liǎng）端固接還是（shì）一端固接另（lìng）一端鉸接。估計你不隻使用1跟立柱，所以可以簡（jiǎn）單計算成兩端固接。臨界壓力簡單計算：P=(4*n*Pi^2*E*I)/[(L/2)^2]。n立柱的數量（liàng），pi^2就是拍的2次方，E彈性（xìng）模量，I慣性矩，L立柱長度（dù）。
2. The stability of thin-walled welded pipe under pressure should be calculated. The calculation of stability is complicated. It depends on whether the connection is fixed at both ends or hinged at the other end. It's estimated that you don't only use one post, so you can simply calculate it as a two-end fixture. Simple calculation of critical pressure: P=(4*n*Pi^2*E*I)/[(L/2)^2]. The number of n columns, PI ^ 2 is the second power of beat, E modulus of elasticity, I moment of inertia, L column length.
進入5月份後，一方（fāng）麵是現貨市場去庫存化持續，另外一方麵是上遊薄壁焊管廠持續的高位粗鋼產量致使內部庫（kù）存（cún）較大，在下調出（chū）廠價的手（shǒu）段下，相對以（yǐ）前的低價（jià）薄壁焊管資源已經陸續發往現貨鋼（gāng）市，預計近（jìn）期可（kě）能集中到市（shì），或許將對薄壁焊管廠（chǎng）剛剛提起的提升鋼價產生製約。
After entering May, on the one hand, the de-stocking of the spot market continues, on the other hand, the continuous high crude steel output of the upstream thin-walled welded pipe factory leads to a large internal stock. Under the means of lowering the ex-factory price, the low-cost thin-walled welded pipe resources have been sent to the spot steel market one after another. It is expected that they may be concentrated in the market in the near future, and perhaps the steel price just raised by the thin-walled welded pipe factory will be raised. Constraints arise.
