Structural pipe

December 13, 2019

Pre-Galvanized Steel Pipe

Pre-galvanized steel pipe is made of galvanized steel strip.However, its antiseptic properties is poor than hot dipped galvanized steel pipe. Ⅰ.Cold Galvanizing Welding Process  Material Inspection (Steel Pipe) — Hanging — De-greasing — Rinsing — Pickling — Washing — Dipping Fluxing — Hot Air Drying — Inside and Outside Hot-dipped Galvanizing Blow — Cooling — Passivation and Rising — Unloading — Inspection and Trimming — Type Identification — Packaging and Storing and Transportation Ⅱ.Product Information Specification: OD: 21.3mm ~ 610mm                           WT: 0.5mm ~ 20mm         […]
December 12, 2019

Hot Dip Galvanized Square Pipe

The hot dipped galvanized square pipe are used in structural projects, shelves, racks, trailers and in ornamental purpose. The framework made by square steel tubes, is used for providing support to the roof. This framework is also used as roof top ventilation baffles. With compare to round steel pipes, square steel pipes are little more efficient. I.Product Basic Info: Name Hot dipped galvanized square pipe Surface Galvanized (200-220g/m2 usual,can be request by customer) Material Q195,Q215,Q235 MOQ  1 tons for normal size and material WT As customer’s requests Payment terms TT or L/C Trade terms FOB,C&F,CIF,EXW Length Fixed or random,as customer request. […]
December 10, 2019

Corten Steel ASTM A606 Corrosion Resistant Square & Rectangular Tube/Pipe

Abstract ASTM A606 covers standards for high-strength, low-alloy, hot-rolled and cold-rolled steel sheets and strips cut in lengths or coils for structural and miscellaneous purposes. The material shall come in Types 2 and 4 steels having enhanced atmospheric corrosion resistance. The material shall follow specified carbon, manganese, and sulfur contents. Tension test shall be performed and material shall comply with tensile strength, yield strength, and elongation requirements. Edges and surface finish of the materials shall conform to specifications. Guidelines for retests are also given. Product Description  Product name  Corten steel square/rectangular pipe  Standard  GB, ASTM, EN, JIS  Grade  09CuPCrNi, Q235GNH, Q355NH, […]
February 14, 2019

Galvanized steel pipe specification, size theoretical weight table

China standard hot-dip galvanized steel pipe|cold galvanized steel pipe specification, size theoretical weight table regulation grid OD mm Wall thickness mm Minimum wall Welded pipe ( 6 m fixed length) Galvanized pipe ( 6 m fixed length) Nominal inner diameter inch   Thick mm Meter weight kg Root weight kg Meter weight kg Root weight kg DN15 1/2 21.3 2.8 2.45 1.28 7.68 1.357 8.14 DN20 3/4 26.9 2.8 2.45 1.66 9.96 1.76 10.56 DN25 1 33.7 3.2 2.8 2.41 14.46 2.554 15.32 DN32 1.25 42.4 3.5 3.06 3.36 20.16 3.56 21.36 DN40 1.5 48.3 3.5 3.06 3.87 23.22 4.1 24.6 DN50 2 60.3 3.8 3.325 5.29 31.74 5.607 33.64 […]
January 4, 2019

Properties of Galvanized Steel Pipe Welds

Properties of Galvanized Steel Pipe Welds Galvanizing has been used to protect iron and steel from rusting for over a hundred years in places as diverse as the wire rope used for the suspension cables on the Brooklyn Bridge to gutters on houses. Galvanizing is simply coating of zinc over steel. Like paint, galvanizing protects steel from rusting by forming a barrier between the steel and the environment, but galvanizing goes one giant step further than paint — it also provides electrochemical protection of the steel. Since zinc is electrochemically more reactive than steel, it oxidizes to protect the steel […]
December 30, 2018

Black and Galvanized Steel Pipe For Water Transmission & Scaffolding

Carbon Steel Pipe (Black and Galvanized) Water Transmission Pipe Pipe Standard : ASTM A53 Grade A – Sch 40 NOMINAL SIZE OUTSIDE DIAMETER WALL THICKNESS LENGTH WEIGHT BUNDLING     maximum minimum inch inch mm inch mm inch mm inch mm meter ft kg/m kg/ft lb/ft pieces 1 1.315 33.4 1.331 33.7 1.299 33.1 0.133 3.38 6 20 2.50 0.76 1.68 91 1¼ 1.660 42.2 1.676 42.5 1.644 41.9 0.140 3.56 6 20 3.39 1.03 2.28 44 1½ 1.900 48.3 1.916 48.7 1.884 47.9 0.145 3.68 6 20 4.05 1.23 2.72 44 2 2.375 60.3 2.399 60.8 2.351 59.8 0.154 3.91 6 […]
November 7, 2018

ASTM A53 seamless and welded black and hot-dipped galvanized steel pipe

ASTM A53 covers seamless and welded black and hot-dipped galvanized steel pipe. The pipes are frequently ordered as follows: Type Black, HDG Manufacturing SMLS, ERW Grade A B Chemical compositions C Mn P S ≤0.25% ≤0.95% ≤0.05% ≤0.045% Cu Ni Cr Mo ≤0.4% ≤0.4% ≤0.4% ≤0.15% V       ≤0.08%         C Mn P S ≤0.3% ≤1.2% ≤0.05% ≤0.045% Cu Ni Cr Mo ≤0.4% ≤0.4% ≤0.4% ≤0.15% V       ≤0.08%         Mechanical properties Yield strength Tensile strength ≥205 MPa ≥330 MPa   Yield strength Tensile strength ≥240 MPa ≥415 MPa   […]
November 5, 2018

Flange anticorrosive steel pipe

Flanges are disc-shaped parts that are most common in plumbing and flanges are used in pairs. In plumbing, flanges are mainly used for the connection of steel pipes. In the pipelines that need to be connected, a variety of flanges are installed, and the low-pressure pipelines can use wire-bonded flanges, and the welding flanges are used at pressures above 4 kg. A sealing point is added between the two flanges and then fastened with bolts. Different pressure flanges have different thicknesses and use different bolts.   Pumps and valves, when connected to the pipeline, part of these equipment, also made into the corresponding flange […]