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<title><![CDATA[EC21 Product Catalogs - stressed]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/stressed--2842/1/stressed.html]]></link><item>
<title><![CDATA[Bend Tube]]></title><link><![CDATA[https://lifeng006.en.ec21.com/Bend_Tube--10119108_10141398.html]]></link><description><![CDATA[Stress relive annealing of U-tubes after bending only for all positions
2) Surface condition finished U-tube shall be free of scale,without scratches after bending.
3) Through ball test
4) 100% Eddy ]]></description><pubDate><![CDATA[20250306]]></pubDate></item>
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<title><![CDATA[SSAW Steel Pipe]]></title><link><![CDATA[https://supersteel123.en.ec21.com/SSAW_Steel_Pipe--12045493_12045500.html]]></link><description><![CDATA[stress than the straight seams, which is 75% to 90% of the straight seam welded pipes, and can therefore withstand greater pressures. compared with the straight welded pipe with the same outer diamet]]></description><pubDate><![CDATA[20250227]]></pubDate></item>
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<title><![CDATA[Corrugated Steel Drainage Pipe]]></title><link><![CDATA[https://aohong2025.en.ec21.com/Corrugated_Steel_Drainage_Pipe--12045120_12045127.html]]></link><description><![CDATA[stress, ensuring long-lasting performance in demanding environments. The corrugated design enhances its strength and flexibility, making it an ideal choice for drainage systems in roads, highways, cu]]></description><pubDate><![CDATA[20250225]]></pubDate></item>
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<title><![CDATA[DIN Black Phosphating Hydraulic Carbon Seamless Steel Tubes with High Precision]]></title><link><![CDATA[https://lunbaosteeltubes.en.ec21.com/DIN_Black_Phosphating_Hydraulic_Carbon--11849819_11869124.html]]></link><description><![CDATA[condition: stress relieved. The surface of tubes can be black or grey phosphating.
Packing: oil coating, bundle packing with steel strips, cover with plastic fabric, Plain ends with caps.
]]></description><pubDate><![CDATA[20241120]]></pubDate></item>
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<title><![CDATA[ERW Welded Steel Pipe]]></title><link><![CDATA[https://17602219466.en.ec21.com/ERW_Welded_Steel_Pipe--12022587_12022588.html]]></link><description><![CDATA[steel, which is an alloy of iron and carbon. Widely used in Structure, Accessorize, Construction, Fluid transportation, machinery parts, the stress parts of the automobiletractor parts and so on
]]></description><pubDate><![CDATA[20241106]]></pubDate></item>
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<title><![CDATA[EN10305-1 E355+sr Precision Seamless Hydraulic Cylinder Honed Steel Tube]]></title><link><![CDATA[https://xinpeng6835383.en.ec21.com/EN10305_1_E355_sr_Precision--12009696_12009704.html]]></link><description><![CDATA[
3. ID tolerance: H8, H9, and H10 
4. Surface roughness: R a 0.2— 0. 8 μm 
5. Final supply condition: cold drawn and stress-relieved (BK+S), BK, NBK GBK 
6. Machining allowance: 0.5-1.5mm 
]]></description><pubDate><![CDATA[20240925]]></pubDate></item>
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<title><![CDATA[DIN2391 ST52 / E355 Seamless Cold-drawn Precision Steel Tubes for Cylinders]]></title><link><![CDATA[https://susanxudsteel.en.ec21.com/DIN2391_ST52_E355_Seamless_Cold--11665304_11666210.html]]></link><description><![CDATA[stress relieved+SRAfter the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere.Annealed+AAfter the final cold drawing process the tubes are annealed in a co]]></description><pubDate><![CDATA[20221031]]></pubDate></item>
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<title><![CDATA[42CrMoS4 Material Seamless Tube Manufacturer]]></title><link><![CDATA[https://vivian6789.en.ec21.com/42CrMoS4_Material_Seamless_Tube_Manufacturer--11844657_11844698.html]]></link><description><![CDATA[dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts,gears.
https://exipei.com/product/42crmos4-material-seamless-tubes-manufacturer/
]]></description><pubDate><![CDATA[20230914]]></pubDate></item>
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<title><![CDATA[DIN17175 ST35.8 / ST45.8 / ST52.2 Heat-resistant Steel Boiler Pipes Tubes]]></title><link><![CDATA[https://tefu888.en.ec21.com/DIN17175_ST35.8_ST45.8_ST52.2_Heat--11750485_11752150.html]]></link><description><![CDATA[Stress relieved,Annealed,Normalized,Quenched+Tempered
End finish 
Plain ends with suqare cuts, bevelled ends, threaded ends
Usage/Application 
Pressure vessels,Fluid conveyance,Structural use,Machine]]></description><pubDate><![CDATA[20230320]]></pubDate></item>
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<title><![CDATA[Manufacturer&apos;s Direct Sales of SS304L Steel Pipe]]></title><link><![CDATA[https://jingchang2004.en.ec21.com/Manufacturer_s_Direct_Sales_of--11878297_11878298.html]]></link><description><![CDATA[stress relief heat treatment.
We offer 2 types of production:
Ready for honing tubes: ID tolerance -0,2 mm -0,3 mm
Ready for burnishing tubes: ID tolerance -0,6 mm -0,9 mm
The tubes are cold dr]]></description><pubDate><![CDATA[20231221]]></pubDate></item>
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<title><![CDATA[Stainless Steel Clad Plate]]></title><link><![CDATA[https://gallianz.en.ec21.com/Stainless_Steel_Clad_Plate--11858614_11903236.html]]></link><description><![CDATA[stress corrosion are present.
Performances of Stainless Steel Clad Plate
The carbon steel and stainless steel usually form a metallurgical bond during heating and rolling by hot rolling or explosion ]]></description><pubDate><![CDATA[20240218]]></pubDate></item>
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<title><![CDATA[Astm A213 Gr T5 T12 T91 A192 Seamless Boiler Tubes Manufacturers 10# 20# 45#]]></title><link><![CDATA[https://seamlesssteeltubecom.en.ec21.com/Astm_A213_Gr_T5_T12--11863743_11863744.html]]></link><description><![CDATA[stresses associated with boiler operations.
Seamless Construction: Seamless boiler tubes are produced using a seamless manufacturing process, which involves heating a solid steel billet and then pier]]></description><pubDate><![CDATA[20231107]]></pubDate></item>
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<title><![CDATA[AISI 439 Stainless Steel Seamless Round Tubes Cold Rolled SS  Seamless Tube  2&quot; SCH XXS]]></title><link><![CDATA[https://daisy1823.en.ec21.com/AISI_439_Stainless_Steel_Seamless--11839306_11858001.html]]></link><description><![CDATA[stress corrosion cracking. Compared to SUS304, it has higher thermal conductivity and lower coefficient of expansion. Commonly used in automotive exhaust components, heat exchanger piping, kitchen eq]]></description><pubDate><![CDATA[20231024]]></pubDate></item>
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<title><![CDATA[Honed Cylinder Tube of Material SAE 4140 for High Strength Requirements]]></title><link><![CDATA[https://honedtubing.en.ec21.com/Honed_Cylinder_Tube_of_Material--11537181_11658468.html]]></link><description><![CDATA[stress-bearing components under impact load. Such as high strength Hydraulic cylinder rods, penaumatic cylinder rods, the transmission eccentric shaft of the horizontal forging machine, the crankshaf]]></description><pubDate><![CDATA[20221019]]></pubDate></item>
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<title><![CDATA[8&quot; SCH120 Smls Steel Pipe As Per Api 5l PSL1 X52 with External 3lpe Coating As Per DIN30670]]></title><link><![CDATA[https://hxpipelineequipment.en.ec21.com/8_SCH120_Smls_Steel_Pipe--11575951_11575960.html]]></link><description><![CDATA[stress.Along any 1m length of pipe,the coating thickness maybe up to 10% less than the minimum required,provded the thinner area does not cover more than 5cm2 Steel gradeDelivery conditionBNS(L245NS)]]></description><pubDate><![CDATA[20220526]]></pubDate></item>
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<title><![CDATA[API 5L Seamless Steel Pipe]]></title><link><![CDATA[https://threewaysteel.en.ec21.com/API_5L_Seamless_Steel_Pipe--4978487_6001117.html]]></link><description><![CDATA[treatment: Annealed: Bright annealed,, Spheroidize annealed, Normalized, Stress relieved, Cold finished, Quenched and Tempered Delivery Conditionï¼BKS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)
]]></description><pubDate><![CDATA[20111115]]></pubDate></item>
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<title><![CDATA[Factory Directly Supply Hot Rolled Welded Galvanized Drip Irrigation Pipe with Low Price]]></title><link><![CDATA[https://alan3218.en.ec21.com/Factory_Directly_Supply_Hot_Rolled--10961535_10962134.html]]></link><description><![CDATA[stresses—these product pipes will have a low wall thickness and will be cheaper to manufacture. Some applications even operate at atmospheric conditions (sewers and gravity fed water systems). More]]></description><pubDate><![CDATA[20190529]]></pubDate></item>
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<title><![CDATA[DOM Seamless Tubes]]></title><link><![CDATA[https://fushunharrislee.en.ec21.com/DOM_Seamless_Tubes--11456488_11456490.html]]></link><description><![CDATA[as follows: P=S((D2-d2)/(D2+d))where:
D= nominal outside diameter of tubing
d= nominal inside diameter of tubing
P= design pressure
S= allowable fiber stress of material at 4:1 design factor
]]></description><pubDate><![CDATA[20211009]]></pubDate></item>
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<title><![CDATA[API 5CT K55 Carbon OCTG Oil Casing Tube]]></title><link><![CDATA[https://jetvision.en.ec21.com/API_5CT_K55_Carbon_OCTG--11032076_11107141.html]]></link><description><![CDATA[stress acts on the pipe body, which puts high requirements on the quality of the casing itself. Once the casing itself is damaged for some reason, it may result in a reduction in production and even ]]></description><pubDate><![CDATA[20200417]]></pubDate></item>
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<title><![CDATA[API 5L Spiral Steel Pipe   Liquid Gas Transportation Welded Steel Pipe for Sale]]></title><link><![CDATA[https://creditsteelpipe.en.ec21.com/API_5L_Spiral_Steel_Pipe--10987617_10987633.html]]></link><description><![CDATA[stress, thus the surface has no scratches. Spiral steel pipe has more flexible thicknesses and diameters, especially in making high-grade thick pipes with small or medium aperture, these techniques h]]></description><pubDate><![CDATA[20240319]]></pubDate></item>
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<title><![CDATA[Gammaplus 200T]]></title><link><![CDATA[https://sidergamma.en.ec21.com/Gammaplus_200T--11145718_11145920.html]]></link><description><![CDATA[stress relieved (+SR) (St. 52 BK+S)
Each tube is protected by recyclable extruded polyethylene film (Ø 35
÷ Ø 120) or cardboard tube (Ø 25 ÷ Ø 120), then packaged into bundles.
Further packagin]]></description><pubDate><![CDATA[20200521]]></pubDate></item>
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<title><![CDATA[Astm A519 SAE4130 Cold Drawn Seamless Tube]]></title><link><![CDATA[https://greatwallsteel9.en.ec21.com/Astm_A519_SAE4130_Cold_Drawn--11575970_11790867.html]]></link><description><![CDATA[Stress
Relieved4483451010350.32–0.38 0.60–0.90 0.04 max0.05 max　　　517448810450.43–0.50 0.60–0.90 0.04 max0.05 max
　　552483841300.28–0.33 0.40–0.60 0.04 max0.05 max0.15–0.35 0.]]></description><pubDate><![CDATA[20230516]]></pubDate></item>
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<title><![CDATA[Low Price Seamless Steel OCTG 7inch 29ppf Casing Oil Api Casing and Tubing Pipe]]></title><link><![CDATA[https://zhuyan230401.en.ec21.com/Low_Price_Seamless_Steel_OCTG--11826223_11829077.html]]></link><description><![CDATA[stress state of underground is complex, and the comprehensive action of tension, compression, bending and torsion stresses acts on the pipe body, which puts forward higher requirements for the qualit]]></description><pubDate><![CDATA[20230803]]></pubDate></item>
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<title><![CDATA[Anti-corrosion and Insulated Steel Pipe Production Line]]></title><link><![CDATA[https://txhmachine.en.ec21.com/Anti_corrosion_and_Insulated_Steel--11854146_11875616.html]]></link><description><![CDATA[stresses, insulation reduces the likelihood of cracking, deformation, and premature failure.
Overall, the implementation of anti-corrosion and insulation measures significantly enhances the quality a]]></description><pubDate><![CDATA[20231214]]></pubDate></item>
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<title><![CDATA[2205 Welded Pipe]]></title><link><![CDATA[https://yesi882000.en.ec21.com/2205_Welded_Pipe--10805820_10805858.html]]></link><description><![CDATA[stress corrosion cracking, crevice, pitting, erosion, and general corrosion in severe environments.
Applications:
Chemical processing, transport and storage – pressure vessels, tanks, piping, and h]]></description><pubDate><![CDATA[20200513]]></pubDate></item>
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<title><![CDATA[Nickel Alloy Seamless Pipe and Tube]]></title><link><![CDATA[https://anniesteel.en.ec21.com/Nickel_Alloy_Seamless_Pipe_and--9124432_9124458.html]]></link><description><![CDATA[Stress corrosion cracking and pitting resistant. 
- Hydrofluoric acid resistant in all concentrations up to the boiling point. 
- More oxidizing attack resistant than copper alloys. 
- Very low corro]]></description><pubDate><![CDATA[20140814]]></pubDate></item>
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<title><![CDATA[Astm Asme SA213 T5 T11 T12 T22]]></title><link><![CDATA[https://tubetrade.en.ec21.com/Astm_Asme_SA213_T5_T11--2454234_3336656.html]]></link><description><![CDATA[Stress Relief, Normalizing, Spheroidize Anneal, Annealing, Bright Annealing, Normalized, Quenched and Tempered, Solution Annealing, etc ;
4) Continuous stenciling as required ;
5) Rust prevention tre]]></description><pubDate><![CDATA[20180418]]></pubDate></item>
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<title><![CDATA[Black Carbon Seamless Steel Precision Pipes and Tubes for Gas Spring Cylinder]]></title><link><![CDATA[https://wrjeffrey.en.ec21.com/Black_Carbon_Seamless_Steel_Precision--11097939_11206288.html]]></link><description><![CDATA[stress relieve annealed.
4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere.
5. NBK (+N) After the final cold forming process the tubes are annealed ab]]></description><pubDate><![CDATA[20200721]]></pubDate></item>
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<title><![CDATA[Cold Rolled Carbon Seamless Steel Pipe for Shock Absorber&amp;Gas Spring(ISO9001)]]></title><link><![CDATA[https://hsmpaul.en.ec21.com/Cold_Rolled_Carbon_Seamless_Steel--11270050_11270643.html]]></link><description><![CDATA[stress relieve annealed.
4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere.
5. NBK (+N) After the final cold forming process the tubes are annealed ab]]></description><pubDate><![CDATA[20201005]]></pubDate></item>
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<title><![CDATA[Spiral Welded Steel Pipe Mill]]></title><link><![CDATA[https://shanxisxmidas.en.ec21.com/Spiral_Welded_Steel_Pipe_Mill--10780767_10781113.html]]></link><description><![CDATA[stress, no surface scratches during the molding process. The SSAW pipes are mainly used for conveying oil and natural gas pipeline, can also be used for civil engineering structures pipes for docks, ]]></description><pubDate><![CDATA[20201216]]></pubDate></item>
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<title><![CDATA[A671 GR.CC70 CL22 LSAW Pipe]]></title><link><![CDATA[https://robertyin.en.ec21.com/A671_GR.CC70_CL22_LSAW_Pipe--10682856_10682906.html]]></link><description><![CDATA[stress is very small and uniformly distributed after the full- length expansion. The corrosion and cracking of the pipe owing to stress can be effectively prevented. The application of welding on sit]]></description><pubDate><![CDATA[20191012]]></pubDate></item>

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