Rigid 10*20-50*100mmHot Dip Galvanized ERW Pipe(BS Standard) tianjin factory high quality from China manufacturer

Rigid 10*20-50*100mmHot Dip Galvanized ERW Pipe(BS Standard) tianjin factory high quality

Rigid 1020-50100mmHot Dip Galvanized ERW Pipe(BS Standard) tianjin factory high quality

Price:	780.0~1200.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Hebei, China (Mainland)


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Product Detail

Model No.: OD: 21.3-219mm WT: 0.8-60mm

Production Capacity: 1,118,000 Ton/Tons per Year

Delivery Date: within 20 days after we rec...

Material standard: A53/A106 GRA/B, Q195,Q215,Q235,10#,20#,45#,16Mn: Package: by bulk or by cont...

Means of Transport: Ocean,Land,Air

Packing: wooden cases or pallet or c...

Application: Structure, gas and oil, petroleum, Hydraulic: Application: Structure, gas...

hot dip galvanized pipe
delivery time:within 15-20 days after we confirmed the order
certificate:ISO9001-2008,BV,SGS

Nominal Pipe Size

Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. The name NPS is based on the earlier "Iron Pipe Size" (IPS) system.

That IPS system was established to designate the pipe size. The size represented the approximate inside diameter of the pipe in inches. An IPS 6" pipe is one whose inside diameter is approximately 6 inches. Users started to call the pipe as 2inch, 4inch, 6inch pipe and so on. To begin, each pipe size was produced to have one thickness, which later was termed as standard (STD) or standard weight (STD.WT.). The outside diameter of the pipe was standardized.

As the industrial requirements handling higher pressure fluids, pipes were manufactured with thicker walls, which has become known as an extra strong (XS) or extra heavy (XH). The higher pressure requirements increased further, with thicker wall pipes. Accordingly, pipes were made with double extra strong (XXS) or double extra heavy (XXH) walls, while the standardized outside diameters are unchanged. Note that on this website only terms XS and XXS are used.

Pipe Schedule

So, at the IPS time only three walltickness were in use. In March 1927, the American Standards Association surveyed industry and created a system that designated wall thicknesses based on smaller steps between sizes. The designation known as nominal pipe size replaced iron pipe size, and the term schedule (SCH) was invented to specify the nominal wall thickness of pipe. By adding schedule numbers to the IPS standards, today we know a range of wall thicknesses, namely:
SCH 5, 5S, 10, 10S, 20, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160, STD, XS and XXS.

Nominal pipe size (NPS) is a dimensionless designator of pipe size. It indicates standard pipe size when followed by the specific size designation number without an inch symbol. For example, NPS 6 indicates a pipe whose outside diameter is 168.3 mm.

The NPS is very loosely related to the inside diameter in inches, and NPS 12 and smaller pipe has outside diameter greater than the size designator. For NPS 14 and larger, the NPS is equal to 14inch.

Standard codes	Models of steel tubes	Chemical compositions
Standard codes	Models of steel tubes	C	SI	Mn	P	S	Cr	Mo	Cu
GB3087	10	0.07-0.13	0.17-0.37	0.38-0.65	≤0.030	≤0.030	0.30.65		≤0.25
GB3087	20	0.17-0.23	0.17-0.37	0.38-0.65-	≤0.030	≤0.030	0.30.65		≤0.250
GB5310	20G	0.17-0.24	0.17-0.37	0.35-0.65	≤0.030	≤0.030	≤0.25	≤0.15	≤0.20
	20MnG	0.17-0.25	0.17-0.37	0.70-1.00	≤0.030	≤0.030	≤0.25	≤0.15	≤0.20
	25MnG	0.23-0.27	0.17-0.37	0.70-1.00	≤0.030	≤0.030	≤0.25	≤0.15	≤0.20
	15CrMo	0.12-0.18	0.17-0.37	0.40-0.70	≤0.030	≤0.030	0.80-1.10	0.40-0.55	≤0.20
	12Cr2Mn	0.08-0.15	≤0.50	0.40-0.70	≤0.030	≤0.030	2.00-2.50	0.90-1.20	≤0.20
	12Cr1MnV	0.08-0.15	0.17-0.37	0.40-0.70	≤0.030	≤0.030	0.90-1.20	0.25-0.35	≤0.20
	10Cr9Mo1V Nb	0.08-0.12	0.20-0.50	0.30-0.60	≤0.020	≤0.010	8.00-9.50	0.85-1.05	≤0.20
ASME SA106	SA106B	0.17-0.25	≥0.1	0.7-1.00	≤0.030	≤0.030
ASME SA106	SA106C	0.23-0.27	≥0.1	0.70-1.00	≤0.030	≤0.030
ASME SA333
ASME SA333
ASME SA335	SA335 P11	0.05-0.15	0.50-1.0	0.30-0.60	≤0.030	≤0.030	1.00-1.50	0.50-1.00
	SA33512	0.05-0.15	≤0.50	0.30-0.60	≤0.030	≤0.030	0.80-1.25	0.44-0.65
	SA335 P22	0.05-0.15	≤0.05	0.30-0.60	≤0.030	≤0.030	1.90-2.60	0.87-1.13
	SA335 P5	≤	≤0.05	0.30-0.60	≤0.030	≤0.030	4.00-6.00	0.45-0.65
	SA335 P91	0.08-0.12	0.20-0.50	0.30-0.60	≤0.020	≤0.020	8.00-9.50	0.85-1.05