ASTM A53ʻO ka maʻamau ka American Society for Testing and Materials. Hoʻopili ka maʻamau i nā ʻano nui a me nā mānoanoa o ka paipu a pili i nā ʻōnaehana paipu i hoʻohana ʻia no ka lawe ʻana i nā kinoea, nā wai a me nā wai ʻē aʻe. Hoʻohana maʻamau ʻia ka paipu maʻamau ʻo ASTM A53 i nā wahi ʻoihana a me nā mīkini, a me ka ʻoihana kūkulu no ka lako wai, ka hoʻomehana a me nā ʻōnaehana ea.

Wahi aASTM A53maʻamau, hiki ke maheleia na paipu i elua ano: Type F a me Type E. Type F he seamless paipu a me type E he uila welded paipu. Pono nā ʻano paipu ʻelua i ka mālama ʻana i ka wela e hōʻoia i ka hoʻokō ʻana o kā lākou mau waiwai mechanical a me ka hoʻohui kemika i nā koi maʻamau. Eia kekahi, pono e hoʻokō nā koi o ka ʻili o ka paipu me nā ʻōlelo o ka maʻamau ASTM A530/A530M e hōʻoia i kona ʻano maikaʻi.

ʻO nā koi hoʻohui kemika o nā paipu maʻamau ASTM A53 penei: ʻaʻole i ʻoi aku ka nui o ke kalapona ma mua o 0.30%, ʻaʻole ʻoi aku ka nui o ka manganese ma mua o 1.20%, ʻaʻole ʻoi aku ka nui o ka phosphorus ma mua o 0.05%, ʻaʻole i ʻoi aku ka nui o ka sulfur ma mua o 0.045%, ʻaʻole ʻoi aku ka nui o ka chromium. 0.40%, a ʻaʻole ʻoi aku ka nui o ka nickel ma mua o 0.40%, ʻaʻole i ʻoi aku ka nui o ke keleawe ma mua o 0.40%. ʻO kēia mau mea hoʻohui kemika e hōʻoia i ka ikaika, paʻakikī a me ka pale ʻana i ka corrosion o ka pipeline.

I ka ʻōlelo o nā waiwai mechanical, koi ʻo ASTM A53 maʻamau i ka ikaika tensile a me ka ikaika o nā paipu i emi iho ma mua o 330MPa a me 205MPa. Eia kekahi, loaʻa i ka elongation rate o ka paipu kekahi mau koi e hōʻoia ʻaʻole hiki ke haki a hoʻololi paha i ka wā e hoʻohana ai.

Ma kahi o ka haku mele a me nā waiwai mechanical, hāʻawi ka ASTM A53 maʻamau i nā lula kikoʻī e pili ana i ka nui a me ka maikaʻi o nā paipu. ʻO ka nui o ka paipu mai ka 1/8 iniha a 26 iniha, me nā ʻano koho mānoanoa pā. Pono ka maikaʻi o ka pipeline i kahi ʻili maʻemaʻe me ka ʻike ʻole o ka oxidation, nā māwae a me nā hemahema e hōʻoia ʻaʻole ia e kahe a poino paha i ka wā e hoʻokomo ai a hoʻohana.

Ma ka laulā, he kūlana koʻikoʻi ka maʻamau ASTM A53 no nā paipu kila kalapona. Hoʻopili ia i nā koi no ka haku mele, nā waiwai mechanical, nā ana a me ka maikaʻi o nā paipu. Hiki i nā paipu i hana ʻia e like me kēia maʻamau ke hōʻoia i ka maikaʻi paʻa a me ka hana hilinaʻi, a kūpono i nā ʻōnaehana paipu ma nā ʻano ʻoihana a me nā kahua kūkulu. He mea koʻikoʻi ka hoʻokumu ʻana a me ka hoʻokō ʻana o nā kūlana ASTM A53 no ka hōʻoia ʻana i ka hana palekana o nā pipeline a me ka hoʻolaha ʻana i ka maikaʻi o ke kūkulu ʻana i ka papahana.