L415M longitudinal seam steel pipe (domestic grade GB T9711-2011 standard).
L415M longitudinal seam steel pipeClick on the avatar in the spot
L415M pipeline steel is the material grade of pipeline steel in our country, which is equivalent to Midea X60M
L is the abbreviation of line, pipeline steel. 415 refers to the yield strength, which can reach 415MPa. m refers to the delivery state: deformation heat treatment.
For details, please refer to the standard: GB T 9711-2011 "Steel Pipes for Pipeline Transmission Systems in the Oil and Gas Industry".
L415M cargo binding.
L415M cargo should be fixed according to customer needs:
Flaw detection level: first, second, third.
Whether a WDT experiment is required.
Impact energy requirements for pipeline steel.
The steel mill can be selected according to the customer's needs.
L415M chemical composition.
2. Low alloy height pipeline steel, meeting the American ASTME91 E104 standard;
3. The low-temperature impact toughness meets the American APIP standard
4. At a minimum of NB:0Within the range of 35%V, it meets the requirements of ASTME 603 E1205 standard
5、 nb:0.30%v:0.Alloys with a content range of 50% and below are used to make low-temperature pipelines and equipment to ensure that pipelines have high toughness and strength at low temperatures
6、v：≤0.15%。
8. Low carbon (0.20%-0.35%), and other indicators are in line with the American ASTME 603 E1205 standard;
9. At no higher than NB: 0In the alloy content range of 40%V, it meets the requirements of NB:050%V nb: 040%。
Goods** weakened, a better trading day of the week. Spot trading in the morning raised;The rigid demand is not strong, and the merchants speed up the shipment. Judging from the selling price trend in the morning, the selling price of the main resources has moved up as a whole, for example, in the Kuti resources, the benchmark of high-quality L415M longitudinal seam steel pipe is 4600-4750 yuan, and the snail is 4980-5000 yuanAmong the factory resources, the base price of Yonggang and Zhongtian thread is 4700-4730 yuan, and the grade difference of Q345B seamless steel pipe is more than 400 yuan. Compared with the same period last Friday, most resources were raised by 20-30 yuan, among them, the Kuti pan snail was relatively stableJudging from the shipment situation, the local demand in Shanghai is relatively small, and the surrounding construction sites are also purchased on demand. In the morning, the goods ** weakened, and the spot was slightly higher;In the afternoon, the goods rose tenaciously, and the spot was stable. In the afternoon, the L415M longitudinal seam steel pipe cargo rebounded at a low level, and the main contract finally closed at more than 4,600 yuanThe goods are upward, and the spot is relatively stable: in terms of goods, large households remain unchanged, and small and medium-sized companies have not risen or fallen (for example, in Kuti resources, the base price of high-quality threads is more than 4,600 yuan;In terms of demand, the local demand in Shanghai is less, and the transactions in the surrounding markets are not activeThroughout the day, sales in East China were low. Round bar, 20-50mm yuan 2750 yuan ton, stable. The Spring Festival is approaching, the market merchants have left the market one after another, the demand is obvious, the actual L415M longitudinal seam steel pipe spot transaction is almost none, the market price adjustment is more, and the daily ** is mainly pushed. Last year, the huge trading of air conditioning copper pipe derivatives is still in the market, and most of the merchants are continuing to collect, the willingness to operate is weak, and the short-term due to the holiday factors, the steel mills have almost no price adjustment, the market is quiet, and the local market price is expected to be stable before the holiday. Shagang in mid-February, the thread is stable, the high line, the coil snail drop 80 is now the three major snails 2500300 high line 2490 coil snail 2500 shagang in the middle of the steady decline, but the current market merchants are more out of the market, the ** is smaller, but it may be suppressed after the holiday.