ASTM A789 Uns 31260 Duplex Stainless Steel Pipe Brighting Annealing1

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ASTM A790 UNS 31260 Duplex Stainless Steel Pipe

DUPLEX is the duplex stainless steel (Duplex Stainless Steel, referred to as DSS), refers to the ferritic and austenitic each accounted for about 50%, generally the content of the lesser phase of the stainless steel needs to reach a minimum of 30%. Duplex stainless steel (DuplexStainlessSteel, referred to as DSS), refers to ferrite and austenite each accounted for about 50%, generally the lesser phase of the content of at least 30% of the stainless steel needs to be reached.

In the case of low C content, Cr content in 18% ~ 28%, Ni content in 3% ~ 10%. Some steel also contains Mo, Cu, Nb, Ti, N
Some steels also contain Mo, Cu, Nb, Ti, N and other alloying elements. This type of steel both austenitic and ferritic stainless steel features, compared with ferritic, plasticity, toughness is higher, no room temperature brittleness, resistance to intergranular corrosion and welding function are significant progress.

At the same time also maintains the 475°C brittleness of ferritic stainless steel as well as high thermal conductivity, superplasticity and other characteristics. Compared with austenitic stainless steel, high strength and resistance to intergranular corrosion and chloride stress corrosion has improved significantly. Duplex stainless steel has excellent resistance to pore corrosion function.Performance, is also a nickel-saving stainless steel. Duplex stainless steel from the 1940s in the United States since its birth, has developed to the third generation.

Its main feature is the yield strength of up to 400-550MPa, is generally 2 times the stainless steel, so you can save material, reduce equipment production costs. In terms of corrosion resistance, especially the media environment is relatively harsh (such as seawater, high chloride ion content) conditions, duplex stainless steel pitting resistance, crevice corrosion, stress corrosion and corrosion fatigue significantly better than the general austenitic stainless steel.

ASTM A789 UNS 31260 Duplex Stainless Steel Pipe International Specification

ASTM A789 UNS 31260 Duplex Stainless Steel Pipe International Specification	ASTM A789/ SA 789, ASTM A790 / SA 790
Standard Specification	ASME, ASTM, AISI, AMS, JIS, EN, SAE, DIN, NF, TOCT, DS, DTD, GB
ASTM A789 UNS 31260 Seamless Pipe Size	OD: 4 to 219mm Wall Thickness: 0.5 to 20mm
Duplex Steel UNS S32550 grade F61 Welded Pipe Size	OD: 5.0 - 1219.2 mm
ASTM A790 UNS 31260 Duplex Stainless Steel EFW Pipe Size	OD: 5.0 - 1219.2 mm
SA 789 UNS 31260 Duplex Stainless Steel Pipe WT	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
ASTM A789 31260 Duplex Pipe manufacturing techniques	Seamless / ERW / EFW/ Welded / Fabricated / CDW/ LSAW/ Seam-Welded / Redrawn
Origin of UNS S31260 Duplex Stainless Steel pipe material	Indian, European, Korean, Japanese
ASME SA 789 31260 Duplex Steel Pipe End Types	BE : Beveled end BBE : Bevel both ends BLE : Bevel large end BSE : Bevel small end TOE / POE = Treaded One End / Plain One End TOE / BOE = Treaded One End / Beveled One End POE / BOE = Plain One End / Beveled One End TBE = Treaded Both Ends PBE = Plain Both Ends
Form	Round, Square, Rectangular
UNS S31260 Stainless Steel Pipe Length	Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded
SA 789 UNS 31260 Duplex Steel Pipe Delivery Condition	Annealed and Pickled, Hot Finished, Polished, Bright Annealed, Cold Drawn
Alloy F255 UNS 31260 Pipe Packing	Ply Wooden Boxes PE Fabric Bundles Steel Strips Bundled Standard seaworthy export packing Plastic Bags, or as required
A789 UNS 31260 Duplex Steel Pipe Value Added Services	Cut to size, thread, and groove
Port	Tianjin ,China
Stocking distributor of leading ASTM A789 UNS 31260 Duplex Stainless Steel Pipe manufacturers	Sanyo Special Steel, Japan make ASTM A789 UNS 31260 Pipe Schoeller Bleckmann, Austria make Duplex Steel UNS S32550 grade F61 Seamless Pipe Nippon Steel Corporation, Japan make ASTM A790 UNS 31260 Duplex Stainless Steel Pipe Sumitomo Metals, Japan make ASME SA 789 UNS 31260 Pipes Seah Steel Corporation, Korea make SA 789 UNS 31260 Duplex Stainless Steel Seamless Pipe Kobe Special Tube, Japan make ASTM A789 31260 Duplex Pipe Tubacex Tubos Inoxidables S.A., Spain make UNS S31260 Duplex Stainless Steel Pipe
A789 UNS 31260 Duplex Steel Pipe Dimensional Specification	ANSI/ ASME B36.10, B36.19, B2.1
Marking on SA 789 31260 Duplex Steel Pipe	Specification Material Grade Nominal Size Schedule or Wall Thickness Method of Manufacturing (Seamless or Welded) Heat Number Manufacturer's Name or Custom Logo - on request Marked Pipe Sample: ASTM A790 UNS 31260 14" NB SCH 40S SEAMLESS HEAT NO. XXXX

ASTM A790 UNS 31260 Duplex Stainless Steel Pipe Inspection & Test reports

Mill Test Certificates with all ASTM A789 UNS 31260 Duplex Stainless Steel Pipe
EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
Chemical Reports
Mechanical Reports
PMI Test Reports
Visual Inspection Reports
Third Party Inspection for ASTM A789 UNS 31260 Pipe
NABL Approved Lab Reports
Destructive Test Report
Non Destructive Test Reports
100% Radiography Test Report
Fumigation Certificates
Raw Materials Certificate
Moisture testing
Heat Treatment Charts
Surface roughness measurement
HS Code Commercial Invoice
Laboratory Test Certificate from Govt. Approved Lab
Form A for Generalized System of Preferences (GSP)

Complete range of SA 789 UNS 31260 Duplex Stainless Steel Pipe material

ASTM A789 UNS 31260 Hot Finished Pipe	Schedule 40S Duplex Steel UNS S32550 grade F61 Pipe
A789 31260 Duplex Steel Capillary Pipes	Small diameter Duplex Steel UNS S32550 grade F61 pipes
1.4410 UNS 31260 Clad Pipes	ASTM A790 UNS 31260 Duplex Stainless Steel Annealed pipes
Cold Drawn ASTM A790 UNS 31260 Duplex Stainless Steel Pipe	ASME SA 789 UNS 31260 Seam Welded Pipe
SA 789 UNS 31260 Duplex Stainless Steel Hollow Pipes	A789 31260 Duplex Steel High pressure Pipes
SA 789 UNS 31260 Duplex Stainless Steel Overlay Pipe	ASTM A789 31260 Duplex Bush Hex Pipe
ASTM A790 UNS 31260 Duplex Stainless Steel SMLS Pipes	ASME SA 789 UNS 31260 Hexagonal Pipes
Thick Wall UNS S31260 Duplex Stainless Steel Pipe	Thin Wall ASME SA 789 31260 Duplex Steel Pipe
UNS S31260 Stainless Steel Cold Drawn Seamless Pipe	High Temperature SA 789 UNS 31260 Duplex Steel Pipe
Seamless Alloy F255 UNS 31260 Pipe	A789 UNS 31260 Duplex Steel Welded Pipe
UNS S31260 Stainless Steel Round Pipes	ASTM A789 31260 Duplex Fabricated Pipes
Alloy F255 UNS 31260 Square Pipes	SA 789 31260 Duplex Steel Schedule 5S Pipes
SA 789 31260 Duplex Steel ERW Pipe	A789 31260 Duplex Steel EFW Pipe
ASTM A789 UNS 31260 CDW Pipes	Duplex Steel UNS S32550 grade F61 Rectangular Pipes
UNS S31260 Duplex Stainless Steel Custom Pipes	ASME SA 789 31260 Duplex Steel Beveled End Pipes
A789 UNS 31260 Duplex Steel Schedule 40 Pipes	Welded SA 789 UNS 31260 Duplex Steel Cold Drawn Pipes
SA 789 31260 Duplex Steel Polished Pipes	ASTM A789 UNS 31260 Exhaust Pipes
UNS S31260 EN 1.4410 Rectangle Pipes	Cold Drawn ASME SA 789 UNS 31260 Seamless Pipes

UNS S31260 Duplex Stainless Steel Pipe Tensile and Yield Strength

SA 789 UNS 31260 Duplex Steel Seamless Pipe Weight Chart

NPS	Outside Diameter (OD)		Wall Thickness (WT)			Weight	Weight
NPS	in	mm	in	mm	Sched	kg/Mtr	Lb/ft
1/2"	0.840	21	0.109	2.769	40 STD	1.268	0.851
			0.147	3.734	80 STD	1.621	1.088
3/4"	1.050	27	0.113	2.870	40 STD	1.684	1.131
			0.154	3.912	80 STD	2.195	1.474
1"	1.315	33	0.133	3.378	40 STD	2.501	1.679
			0.179	4.547	80 STD	3.325	2.172
1 1/4"	1.660	42	0.140	3.556	40 STD	3.385	2.273
			0.191	4.851	80 STD	4.464	2.997
1 1/2"	1.900	48	0.145	3.683	40 STD	4.048	2.718
			0.200	5.080	80 STD	5.409	3.361
2"	2.375	60	0.154	3.912	40 STD	5.441	3.653
			0.218	5.537	80 STD	7.480	5.022
2 1/2"	2.875	73	0.203	5.516	40 STD	8.629	5.793
			0.276	7.010	80 STD	11.411	7.661
3"	3.500	89	0.216	5.486	40 STD	11.284	7.576
			0.300	7.620	80 STD	15.272	10.253
4"	4.500	114	0.237	6.020		16.073	10.790
			0.337	8.560		22.318	14.983
6"	6.625	168	0.188	4.775		19.252	12.924
			0.203	5.516		20.739	13.923
			0.219	5.563		22.318	14.983
			0.250	6.350		25.354	17.021
			0.280	7.112	40 STD	58.263	18.974
			0.312	7.925		31.334	21.036
			0.375	9.525		37.285	25.031
			0.432	10.973	80 XHY	42.561	28.573
			0.500	12.700		48.719	32.708
8"	8.625	219	0.188	4.775		25.233	16.940
			0.203	5.156		27.198	18.259
			0.219	5.563		29.286	19.661
			0.250	6.350	20	33.308	22.361
			0.277	7.036	30	36.786	24.696
			0.322	8.179	40	42.352	28.554
			0.375	9.525		49.216	33.041
			0.406	10.312	60	53.085	35.638
			0.500	12.700	80 XHY	64.627	43.388
10"	10.750	273	0.188	4.775		31.588	21.207
			0.219	5.563		36.689	24.631
			0.250	6.350	20	41.759	28.035
			0.307	7.798	30	51.002	34.240
			0.344	8.738		56.946	38.231
			0.365	9.271	40 STD	63.301	40.483
			0.438	11.125		71.852	48.238
			0.500	12.700	60 XHY	81.530	54.735
			0.594	15.088	80	95.969	64.429
12"	12.750	324	0.188	4.775		37.570	25.222
			0.219	5.563		43.657	29.309
			0.250	6.350		49.713	33.375
			0.281	7.137		55.739	37.420
			0.312	7.925		61.735	41.445
			0.375	9.525		73.824	49.562
			0.406	10.312		79.727	53.525
			0.500	12.700		97.438	65.415
			0.562	14.275		108.966	73.154
14"	14.000	356	0.188	4.775		41.308	27.732
			0.219	5.563		48.012	32.233
			0.250	6.350	20	54.685	36.713
			0.281	7.137		61.327	41.172
			0.312	7.925		67.939	45.611
			0.375	9.525	STD	81.281	54.568
			0.438	11.125	40	94.498	63.441
			0.500	12.700	XHY	107.381	72.090
			0.625	15.875		132.983	89.278
16"	16.000	406	0.188	4.775		47.290	21.748
			0.219	5.563		54.980	36.910
			0.250	6.350	10	62.639	42.053
			0.281	7.137		70.268	47.174
			0.312	7.925	20	77.866	52.275
			0.344	8.738		85.677	57.519
			0.375	9.525	30 STD	93.213	62.578
			0.438	11.125		108.433	72.797
			0.500	12.700	40 XHY	123.289	82.770
18"	18.000	457	0.219	5.563		61.948	41.588
			0.250	6.350		70.593	47.393
			0.281	7.137		79.208	53.176
			0.312	7.925	20	87.792	58.939
			0.375	9.525	STD	105.144	70.588
			0.438	11.125	30	122.369	82.152
			0.500	12.700	XHY	139.198	93.450
			0.562	14.275	40	155.904	104.666
			0.625	15.875		172.754	115.978
20"	20.000	508	0.250	6.350		78.547	52.733
			0.282	7.163		88.458	59.386
			0.312	7.925		97.719	65.604
			0.375	9.525	20 STD	117.075	78.598
			0.438	11.125		136.305	91.508
			0.500	12.700	30 XHY	155.106	104.130
			0.594	15.088	40	183.378	123.110
			0.625	15.875		192.640	129.328
			0.688	17.475		211.368	141.901
24"	24.000	610	0.250	6.350		94.456	63.413
			0.281	7.137		106.029	71.183
			0.312	7.925		117.573	18.932
			0.375	9.525	20 STD	140.938	64.618
			0.438	11.125		164.176	110.219
			0.500	12.700	XHY	186.923	125.490
			0.625	15.875		232.410	156.028
			0.688	17.475	40	255.148	171.293
			0.750	19.050		277.401	186.233
30"	30.000	762	0.250	6.350		118.318	79.433
			0.281	7.137		132.851	89.189
			0.312	7.925	10	147.353	98.925
			0.375	9.525	STD	176.731	118.648
			0.438	11.125		205.983	138.286
			0.500	12.700	20 XHY	234.647	157.530
			0.625	15.875	30	292.066	196.078
			0.688	17.475		320.817	215.380
			0.750	19.050		348.988	234.293
36"	36.000	914	0.250	6.350		142.180	95.453
			0.281	7.137		159.672	107.196
			0.312	7.925	10	177.133	118.918
			0.375	9.525	STD	215.525	142.678
			0.438	11.125		247.790	166.353
			0.500	12.700	20 XHY	282.372	198.570
			0.625	15.875		351.723	236.128
			0.688	17.475		386.487	259.467
			0.750	19.050		420.576	282.353
42"	42.000	1067	0.312	7.925		206.914	138.911
			0.375	9.525	STD	248.319	166.708
			0.500	12.700	XHY	33.097	221.610
			0.750	19.050		492.163	330.413
48"	48.000	1219	0.375	9.525	STD	284.112	190.738
			0.438	11.125		331.404	222.487
			0.500	12.700	XHY	377.822	253.650
			0.750	19.050		563.750	378.473
			0.875	22.225		655.969	440.383