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    分类归档 Steel News

    What are the differences between A106 and A53?

    ASTM A53 pipes and ASTM A106 pipes are very similar,they are the most commonly used carbon steel pipes for industry applications. Although the differences between ASTM A53 pipes and ASTM A106 pipes are few,they differ greatly in the time and place specified

    ASTM A53 is Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.

    ASTM A106 is Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service.

    API 5L is Specification for Line Pipe.

    Application

    A 53 is a general steel pipe spec which covers galvanized pipe and black pipe. It is available in Type S (seamless), Type E (ERW, electric resistance welded longitudinal seam), and Type F (furnace welded).

    A106 Gr. B is intended for high temperature service (up to 750 Deg F). It just applies to seamless steel pipe with killed steel. Pipe of NPS 1 1/2” and under may be either hot finished or cold drawn. Unless specified, pipe on and over NPS 2″ shall be furnished hot finished, while A53 and API 5L are not.

    API 5L Gr. B (PSL-1) is mainly developed for Line pipes used in conveying gas, oil, and water in oil and gas industry. Either seamless steel pipe or welded pipe is OK.

    Chemical compositions of ASTM A53 Pipes VS ASTM A106 Pipes:
    The chemical composition difference between ASTM A106 and ASTM A53 can be obtained from the following table:

    1.ASTM A106 contains silicon with a minimum content of 0.10%.ASTM A53 don’t contain silicon.Silicon as an alloying element improves heat resistance in ASTM A106 pipe,which is rated for high-temperature service.Without it,regular exposure to high temperatures can weaken pipe over time,increasing its risk of failure.

    1. ASTM A53 and ASTM A106 have different manganese content.

    3.ASTM A106 and ASTM A53 standards contain varying amounts of sulfur and phosphorus,and the maximum content of ASTM A106 standard is 0.035%.The content of sulfur and phosphorus in ASTM A53 was 0.05 and 0.045% respectively.These elements are normally considered impurities in steel,so their incorporation in piping is minimal. However, the trace amounts of these elements add machinability to steel pipe.

    Chemical compositions

    Standard Grade Chemical Composition %
    C Mn P S Si Cr Cu Ni Mo V
    ASTM A106 B ≤0.30 0.29-1.06 ≤0.035 ≤0.035 >0.10 ≤0.40 ≤0.40 ≤0.40 ≤0.15 ≤0.08
    ASTM A53 B ≤0.30 ≤1.20 ≤0.05 ≤0.045 ≤0.40 ≤0.40 ≤0.40 ≤0.15 ≤0.08
    API 5L B(PSL-1) ≤0.28 ≤1.20 ≤0.030 ≤0.030
    DIN 1629,
    DIN 2448
    St 37.0 ≤0.17 ≤0.040 ≤0.040
    St 44.0 ≤0.21 ≤0.040 ≤0.040
    EN10210 S235JRH ≤0.17 ≤1.40 ≤0.040 ≤0.040
    GB/T8163,
    GB/T8162
    10# 0.07-0.13 0.35-0.65 ≤0.035 ≤0.035 0.07-0.37 ≤0.15 ≤0.25 ≤0.30
    20# 0.17-0.23 0.35-0.65 ≤0.035 ≤0.035 0.17-0.37 ≤0.25 ≤0.25 ≤0.30

    Mechanical properties

    StandardGradeTensile Strength
    (MPa)
    Yield Strength
    (MPa)
    Trans.Elongation
    (%)
    Impact Test
    (J)
    ASTM A106B>415≥240≥16.5
    ASTM A53B>415≥240
    API 5LB(PSL-1)>414≥241As clause a
    DIN 1629St 37.0350-480≥235≥23
    DIN 2448St 44.0420-550≥275≥19
    EN10210S235JRH360-510≥235≥2627 (+20°C)
    GB/T 816310#335-475≥205≥24
    GB/T 816220#410-550≥245≥20

    A53 is usually for defining welded pipe, while A106 for seamless. If you ask for A53, suppliers will also quote A106 or API 5L as an alternate.

    China Hit With Heavy Cold-Rolled Steel Duties, Korean and Russian Imports Mostly Unharmed

    Today, the Commerce Department announced its affirmative preliminary determinations in the countervailing duty investigations of imports of cold-rolled steel flat products from Brazil, China, India, and Russia, and its negative preliminary determination in the CVD investigation of imports of cold-rolled steel flat products from South Korea.

    The investigations cover cold-rolled, flat-rolled steel products. It should come as no surprise that the largest subsidies are being assigned to Chinese importers.

    Chinese Imports Take a Hit

    In the China investigation, Commerce preliminarily determined that mandatory respondents Angang Group Hong Kong Co., Ltd. and Benxi Iron and Steel (Group) Special Steel Co., Ltd. and, a non-cooperative exporter — Commerce’s term for companies that do not respond to requests for information in the investigation — Qian’an Golden Point Trading Co., Ltd., received whopping subsidy rates of 227.29%.

    All other exporters of cold-rolled steel flat products from China will be subject to that same subsidy rate of 227.29%. The rates are based on adverse facts available. Commerce determined that the Government of the People’s Republic of China, and the mandatory respondents, did not fully cooperate in the investigation.

    China Hit With Heavy Cold-Rolled Steel Duties, Korean and Russian Imports Mostly Unharmed

    Today, the Commerce Department announced its affirmative preliminary determinations in the countervailing duty investigations of imports of cold-rolled steel flat products from Brazil, China, India, and Russia, and its negative preliminary determination in the CVD investigation of imports of cold-rolled steel flat products from South Korea.

    The investigations cover cold-rolled, flat-rolled steel products. It should come as no surprise that the largest subsidies are being assigned to Chinese importers.

    Chinese Imports Take a Hit

    In the China investigation, Commerce preliminarily determined that mandatory respondents Angang Group Hong Kong Co., Ltd. and Benxi Iron and Steel (Group) Special Steel Co., Ltd. and, a non-cooperative exporter — Commerce’s term for companies that do not respond to requests for information in the investigation — Qian’an Golden Point Trading Co., Ltd., received whopping subsidy rates of 227.29%.

    All other exporters of cold-rolled steel flat products from China will be subject to that same subsidy rate of 227.29%. The rates are based on adverse facts available. Commerce determined that the Government of the People’s Republic of China, and the mandatory respondents, did not fully cooperate in the investigation.

    German Steel mills reduces prices in an effort to maintain output

    European steel prices for flat and long products continue to plummet due to end-of-year stock considerations and the seasonal slowdown in activity, said MEPS International.

    In December’s release of the European Steel Review, MEPS reports that German steel mills have reduced prices in an effort to maintain output. European buyers have secured spot deals at competitive resale values as manufacturers sell excess stock to minimise end-of-year inventories.

    UK buyers are forecasting further price falls in the first quarter as European market activity is generally weak.

    Conversely, demand in the European automotive sector is growing month-on-month. Furthermore, the depreciation of the euro against the US dollar is making non-EU imports less competitive.

    Consequently, Italian and Spanish steelmakers are talking of small price rises in the first quarter. However, buyers are doubtful that any price hike would be accepted by the market.

    US Raw Steel production declines sharply by 14.4% y/y to 1,536,000 net tons

    NEW YORK?(Scrap Register):?United States raw steel production declined sharply by 14.4% year-on-year to 1,536,000 net tons in the week ended December 12, 2015, while the capability utilization rate was 64.2 percent, as per the latest figures from the American Iron and Steel Institute (AISI).

    According to AISI, production was 1,795,000 net tons in the week ended December 12, 2014 while the capability utilization then was 74.6 percent.

    Production for the week ended December 12, 2015 is down 1.1 percent from the previous week ended December 5, 2015 when production was 1,553,000 net tons and the rate of capability utilization was 65.0 percent.

    Adjusted year-to-date production through December 12, 2015 was 83,864,000 net tons, at a capability utilization rate of 71.4 percent. That is down 9.0 percent from the 92,117,000 net tons during the same period last year, when the capability utilization rate was 77.5 percent.

    ATI Idles GOES, Some Stainless Operations; Chinese Output Still Slowing

    One of only two US-based grain-oriented electrical steel (GOES) producers recently idled production of the specialty metal, alone with some of its stainless melting and finishing operations. Commodity data from China continues to disappoint.

    ATI Idles Stainless Line, GOES Operations Over Low Prices

    Allegheny Technologies, Inc.?has idled its standard stainless melt shop and sheet finishing operations at its Midland, Pa. facility. ATI also idled its grain-oriented electrical steel (GOES) operations, including its Bagdad, Pa. facility.

    Free Sample Report: Our Annual Metal Buying Outlook

    ATI said, in a statement, that the future restart of the Midland and GOES operations, respectively, will depend on future business conditions and ATI’s ability to earn an acceptable return on invested capital on products produced at those operations.

    Chinese Slowdown Continues in November

    China’s output of key industrial commodities, including coal and steel,?remained weak?in November amid chronic oversupply as slowing construction demand took its toll.

    Free Download: The December MMI Report

    The world’s second-largest economy has been hit by weak demand at home and abroad, factory overcapacity and challenges posed by its transition to a consumption-led growth model from one reliant on investments

    Major steel scrap exporters seen shifting their focus to non-Chinese markets

    The sharp plunge in iron ore prices has resulted in a shift in steel production from electric arc furnaces (EAFs) and induction furnaces (IFs) to blast furnaces, especially in China. The ramp-up in steel production by non-Chinese region has shifted the focus of steel scrap exporters to destinations such as India, Turkey and south Asian countries.

    In many of these countries, the domestic scrap output is found insufficient to meet growing steel scrap demand by EAFs and IFs. Also, unlike China, these countries have recorded significant rise in steel production during the year.

    For instance, India’s steel production has risen by 3.3% over the previous year to 75.1 million tonnes during the initial ten-month period of the year. This is at a time when global steel output dropped by almost 2.5%. Also Chinese production slumped by 2.2%. During the first eight months of the current year, India’s scrap imports have jumped higher by 18% to 4.187 mt. The fall in supply from domestic sources is likely to push imports of steel scrap by the country. Incidentally, the scrap consumption by the country is expected to double over the next ten-year period.

    The imports of steel scrap by Bangladesh has witnessed dramatic rise in 2015. The imports are likely to grow at the fastest pace in 2016 also. The steel scrap consumption by EAFs and IFs in the country are projected to total around 3 million tonnes, almost five times the consumption levels witnessed in 2015. The favorable import duty structure in the country will boost more imports of scrap into the country.

    The scrap imports by Pakistan too has picked up. According to 2014 data, South Korea is the largest importer of steel scrap in Asian region, followed by India. The region had accounted for almost 30% share of the global seaborne steel scrap trade during the year.

    Meantime, Turkish steel scrap imports have dropped by almost 18% over the previous year to 12.04 million tonnes during the initial nine-month period of the year. The steel output by the country during this period has declined considerably. However, the new government order that requires all steel finished products made from billets imported from China to be exported within nine months has led to rise in demand for scrap by EAFs.

    Updated list of top ferrous scrap processors in North America to be published soon

    Recycling Today Media Group will be publishing an updated list of Top 20 Ferrous Scrap processors in North America in its March 2016 issue. This will override the existing list published earlier in 2014.

    Ferrous scrap processors who wish to participate are required to update their information in the online form. They are required to punch in the total physical volume of ferrous scrap handled at all of its facilities during the entire year 2015. The figure must be inclusive of scrap taken in at all facilities meant for processing or further shipment. Exporters should enter the total volume of ferrous scrap purchased for export and loaded on to a vessel during the year. The quantity of scrap brokered by traders or brokers is not allowed to be included.

    The existing list of 20 largest ferrous scrap processors in North America published in March 2014 is provided below.

    Rank

    Company Name

    Location

    2013 Ferrous Volume (Gross Tons)-est

    1

    Sims Metal

    Management Inc.

    New York, NY

    7.5 million

    2

    The David J. Joseph Co

    Cincinnati, OH

    5 million

    3

    Tube City IMS

    Glassport, PA

    4.55 million

    4

    OmniSource Corp

    Fort Wayne, IN

    4.3 million

    5

    Schnitzer Steel

    Industries – Metals

    Recycling Business

    Portland, OR

    4.3 million

    6

    Ferrous Processing

    & Trading Co

    Detroit, MI

    3.15 million

    7

    Scrap Metal Services LLC

    Burnham, IL

    3 million

    8

    Alter Trading Corp

    St. Louis, MO

    2.5 million

    9

    Triple M Metal Inc.

    Brampton, ON,

    Canada

    2.28 million

    10

    Commercial Metals Co.

    Irving, TX

    2.1 million

    11

    Gerdau

    Ameristeel Recycling

    Whitby, ON,

    Canada

    1.91 million

    12

    American Iron & Metal

    Montreal, QC,

    Canada

    1.8 million

    13

    PSC Metals Inc.

    Mayfield Heights, OH

    1.64 million

    14

    European Metal

    Recycling Ltd.

    New York, NY

    1.44 million

    15

    AMG Resources Corp.

    Pittsburgh, PA

    1.34 million

    16

    Azcon Corp.

    Chicago, IL

    1.2 million

    17

    Cohen Brothers Inc.

    Middletown, OH

    1.1 million

    18

    Upstate Shredding

    Owego, NY

    1 million

    19

    Behr Iron & Metal Co

    Rockford, IL

    717,080

    20

    Newell Recycling

    of Atlanta Inc.

    East Point, GA

    621,500

    Spot HRC prices in US Midwest market fall to near 12-year low in November

    Spot hot rolled coil prices in the US Midwest market fell to a near 12-year low during November as seller woes continued despite recent action by domestic steelmakers against perceived unfair trade activity. Whilst the flow of imports steadily slows each month, a glut of domestic steel and shortening delivery lead-times continue to negatively weigh on prices, said The Steel Index in a snippet.

    After hot rolled coil (HRC) prices breached the $400 a short ton floor in late October, November spot prices plummeted a further $29 a short ton FOB Midwest Mill over a four-week period to $364 a short ton.

    Seller woes continued throughout the month despite recently filed trade action against foreign imports. The move was initially thought to bolster sentiment for domestic steel producers in the short-term, but this failed to materialise.

    The resulting fall saw spot prices hit new record lows—last month the index was the lowest since 2009, while this month prices were at the lowest point since January 2004.

    The Metals Service Center Institute (MSCI) showed that service center inventories slipped below the 9 million short ton mark for the first time since July 2014, falling 4.2% compared to the same period last year.

    At current shipping rates, inventories at service centers represent 2.7 months of supply, broadly consistent with the levels seen throughout 2015.

    Unsurprisingly, the dialling down of production levels accelerated in November as crude steel capacity utilisation slid to its lowest point since January 2010 according to data released by the American Iron & Steel Institute (AISI). The final week of November saw utilisation fall to 62.2%, 13.4% lower than the same period last year.

    However, preliminary AISI data showed a boun

    Brazil steel sheet imports plunged 46% in November

    The latest statistics published by Brazil’s Foreign Trade Ministry indicates significant decline in imports of steel sheets by the country during the month of November this year. The Brazilian steel sheet products import dropped by 46% during the month. The imports totaled 39,154 mt as compared with the imports of 72,491 mt during the same month a year ago.

    The country’s hot rolled coil (HRC) imports totaled 6,653 mt, rising significantly by 13.2% year-on-year. The HRC imports by Brazil had totaled 5,876 mt during November last year. The value of HRC imports totaled $3.02 million FOB during November this year.

    Brazil imported 14,804 mt of cold rolled coils (CRC) during Nov ’15, down considerably by 52.6% when matched with the imports of 31,210 mt during same month a year before. The value of CRC imports totaled $6.93 million during the month.

    The hot-dipped galvanized (HDG) steel imports by Brazil dropped considerably by 50% to 17,697 mt, falling from 35,405 mt a year before. The value of HDG imports totaled $9.49 million.

    The cumulative steel sheet imports by Brazil during the eleven-month period from January to November this year totaled 779,641 mt. The imports dropped by 27.5% when matched with the imports of nearly 1.07 million mt during the corresponding eleven-month period in 2014. The value of imports dropped from $742.68 million FOB a year before to $462.66 million FOB during Jan-Nov ’15.

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