STK400 Galvanized pipe-Shandong GDA Import and Export Co., Ltd.

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STK400 Galvanized pipe

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PRODUCT DESCRIPTION

STK400 is structural steel,standards is JIS G3444 of carbon steel tubes for general structure.

Description

Galvanized pipes have a wide range of uses. In addition to oil and other low-pressure fluid pipelines, it is also used as oil well pipes in the petroleum industry, especially in offshore oil fields, oil heaters in chemical coking equipment, coal distillation, and oil washing converter pipes, bridges, etc. Pipe pile, mining tunnel support frame with pipe, etc. Developed countries in the world started to develop new pipes and continuously banned galvanized pipes.

Product introduction：

Galvanized steel pipe is divided into cold galvanized steel pipe, hot galvanized steel pipe, cold galvanized steel pipe has been banned, the latter is also advocated by the state can be used temporarily.

Application：

Hot-dip galvanized steel pipe is widely used in construction, machinery, coal mine, chemical industry, electric power, railway vehicles, automobile industry, highway, bridge, container, sports facilities, agricultural machinery, petroleum machinery, mining machinery, greenhouse construction and other manufacturing industries.Galvanized steel pipe Welded steel pipe with hot dip plating or electrogalvanized coating. Galvanized steel pipe can increase the corrosion resistance, prolong the service life. Galvanized pipe has a wide range of uses, in addition to the pipeline pipe for water, gas, oil and other general low pressure fluid, but also used in the petroleum industry, especially the oil well pipe, oil pipeline, chemical coking equipment of the oil heater, condensate cooler, coal distillation and washing oil exchanger with the pipe, and trestle pipe pile, mine tunnel support frame with pipe.

Thickness	1-200mm；or as required	Length:	2000-16000mm，or as required
Dimensions	16-1020mm；(1/2inch~40inch)Dimensions	Technique	Hot Rolled Or Cold Rolle
Zinc Coating	pre galvanized steel pipe: 60-150g/m2 hot dipped galvanized steel pipe:200-460g/m2	Surface treatment	Cold galvanizing，Hot dip galvanized
Certification:	CE, ISO, SGS，BV，Mill Certificate	Standard:	ASTM，JIS，GB，DIN，EN
price terms	FOB,CRF,CIF,EXW, CPT	Payment Terms	T/T, L/C at sight,West Union
Grade	Q195—Grade B, SS330, SPC, S185
	Q215—Grade C,CS Type B, SS330, SPHC，
	Q235---Grade D, SS400, S235JR, S235JO, S235J2，
	Q345---SS500, ST52，S355JR
Delivery Detail	Standard has Stock; Normal About 3-5days; Custom-made 15-20days；According to order's quantity.
Packing	standard export packing (inside:water proof paper,outside:fumigated wooden box) Hexagon Shape Bundle, Covered With Tarpaulin, Containers Or In Bulk

Specification&Standard

hot-dip/cold galvanized steel pipe specification

regulation	grid	ODmm	Wall thickness mm	Minimum wall	Welded pipe( 6 m fixed length)		Galvanized pipe( 6 m fixed length)
Nominal inner diameter	inch	ODmm		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
DN65	2.5	76.1	4	3.5	7.11	42.66	7.536	45.21
DN80	3	88.9	4		8.38	50.28	8.88	53.28
DN100	4	114.3	4		10.88	65.28	11.53	69.18
DN125	5	140	4.5		15.04	90.24	15.942	98.65
DN150	6	168.3	4.5		18.18	109.08	19.27	115.62
DN200	8	219.1	6 (welded pipe)		31.53	189.18
DN200	8	219.1	6.5 hot-dip galvanizing				36.12	216.72

GB / T 3091-2001 hot-dip galvanized pipe wall thickness deviation

eWeigh	Chinese standard				Enterprise standard				Contrast conclusion
	Low pressure fluid conveying welded steel pipe				Welded steel pipe
	GB/T3091-2001				Q/YF01-2002
1	Steel pipe outer diameter				Steel pipe outer diameter,outer diameter allowable deviation				Better than Chinese standards
	Outer diameter D/mm	Tube outer diameter deviation mm		Tube outer diameterDeviation mm	Outer diameter D	8″	± 0.60mm
	D< 48.3	± 0.5mm				5″-6″	± 0.50mm
	48.3	± 1.0%				4″	± 0.40mm
	168.3	± 0.75%		+2.4 -0.8		3″-“	± 0.30mm
	D>508	± 1.0%		+3.0 -0.8		2″ or less	± 0.20mm
	Wall thickness deviation	± 12.5%			Wall thickness S	1.85.75mm	5%
2	Usual length		Allowable deviation		length	Usual length		Allowable deviation	Better than Chinese standards
	4M-12M		+20 -0			2 inches or less		5-0
	Double length: 5-10mn ® should beleft for each double in the usual lengthMargin		+20 -0			2.5 inches – 4 inches		5-0
						5 inches or more		15-0
						Special length		20-0

Standard: ASTM A53, BS1387-85, GB/T3091-08, DIN2440, JIS-G3444, EN10240, EN10255

Grade: Q195, Q215, Q235, Q345, S235JR, S275JR, STK400, STK500

API SPEC 5L — Specification for Line Pipe

ASTM A53/A53M — Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A500 — Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

BS 1387 — Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads

BS 1139 — Metal scaffolding. Specification for prefabricated mobile access and working towers

EN 39 — Loose steel tubes for tube and coupler scaffolds

EN 10255 — Non-alloy steel tubes suitable for welding and threading

Process

Welded pipe inspection - pickling - washing - coating solvent - aligning - drying - hot galvanizing - external blowing - internal blowing - water cooling - intermediate inspection - passivation - drying - typing - packaging - final inspection

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